1. Each of six types of cheese were presented, unidentified but with
labels on them, as follows (equivalent fractions were not on labels):
      provolone .778 lb (7/9) 
      feta .750 lb (3/4) 
      muenster .750 lb (6/8) 
      american .875 lb (7/8) 
      swiss .400 lb (2/5) 
      cheddar .857 lb (6/7)
Using the fraction as an index into the name of each cheese
(letter-used/total-letters) spells OTTAWA.

2. Converting hex to binary gives a string where one or three 1s
are separated by 1 or 3 0s.  Using one 1 as a dot, three 1s as a
dash, one 0 as a letter separator and three 0s as a word separator,
this can be read as Morse code for "Letter between kilo and mike"
which in the radio alphabet is LIMA.

3. All of these things are in the mural on the floor of the A-level
of building 8.  Drawing a line from item to item in each column
spells the three letters (one per column of clues) RAJ.

4. Each clip is missing a word, and is by an artist with a color
in their names:
 you'd  black sabbath - No Stranger to Love
 better blue rodeo - Better Off As We Are	     
 before green day - No Pride
 you    agent orange - You Belong to Me		     
 tear   deep purple - Black & White		     
 me     red hot chili peppers - True Men Don't Kill Coyotes
 all    plain white tees - Hey There Delilah
 apart  yellow card - Miles Apart                    
The thing to guess(?) here is that one entire song has been censored.
Noting that the artists are alphabetical by color, and "brown" would
fit after clip 2 (or just Googling subsets of those words in order),
we get the phrase "You'd better *blank* before you tear me all apart",
and the missing word is also the title of the song with those lyrics:
Sam Brown's STOP.

5.  These words are from a bunch of categories, all mixed together,
with one item missing from each category.  The missing items and
categories are:
 I [symbols for the halides]
 ti [notes of the musical scale]
 sun [things the days of the week are named for]
 lira [currencies replaced by the Euro]
 April [months]
 monkey [years in the chinese calendar]
 Bolivia [countries in south america]
 aquarius [signs of the zodiac]
 Dartmouth [schools of the ivy league]
 accusative [cases of Latin nouns]
The missing items are all of different lengths, 1-10, and their first
letters when in length order spell "It's LAMBADA".

6. This is a fairly straightforward barred crossword, except that ten
of the squares need to be filled with the letters RIT ("a personal
touch").  There are ten of those squares, one in each row, in the
columns A,N,S,W,E,R,A,V,O,N.

7. These pictures are (more or less, depending on the size of your
browser window) what you get from entering certain zip codes into
Google Maps.  The zip codes (or Spanish/Italian postal code) are:
      25152/11801  14192/30518  16011/81301
Which, converting to letters at two digits per letter, 1=A -> 26=Z, gives:
      y o u  r a   n s w  e r   p a r  m a 

8. All answers are six letter words.  The first three letters of each
"pipes" answer are the same as the last three letters of a "process",
and the last three letters of each "pipe" are the same as the first three
of a process.  All the answers can be made into six chains of the form
process/pipe/process/pipe/process, as follows:
 absentraptorquench
 babbleachingestado
 cuspidgingerbillow
 disbartonsilkennel
 erranthermittenure
 feistylusterbiceps
The first letters are A-F, so putting the chains in that order and
reading the last letters spells HOWLES.

9. Each given file is a valid program in a different language, in
which each word has been "advanced" a certain number of places down
the standard Unix dictionary.  In prog1, the first word has been
advanced one place, the next word two places, then three, etc.
In prog2, the first word is advanced two places, then four, six,
eight etc., and in prog3, three places, six, nine, etc.  The programs
are in Scheme, Prolog and Python respectively.  To run them:
 prog1: execute (function 'input) -> (input alphabet one by one to third file)
 prog2: execute useful(X). -> move third file result one position toward a
 prog3: input {a->z} produces output {tdbscpspvhigbjstgpvsuiifsc}
   which, when moved back one letter spells "scarboroughfairsfourthherb"
"Scarborough Fair" is the song that contains the refrain "Parsley,
sage, rosemary and THYME".

10. On each day, a different scheme is used to clue companies in the
S&P 500.  In each case, the symbols for the two "Buy" stocks contain
all the letters of the symbols of the "Sell" stocks, plus one:
   M: parent companies: Y = YUM (Taco Bell) + TWX (AOL) 
        - UTX (Pratt & Whitney) - WM (Providian) 
   T: logos: I = NVDA (Nvidia) + STI (Sun Trust) 
        - SNA (Snap-On) - DTV (DirecTV)
   W: HQ addresses: E = AES (4300 Wilson Boulevard) + APOL (4615 East Elwood St)
        - AAPL (1 Infinite Loop) - SO (30 Ivan Allen Jr. Blvd. NW)
   R: cryptic clues: 
       L = ECL (Ecolab [COLA inside (d)EB] ) + AMGN (Amgen [GAME anagram + N]) 
          - CAG (Conagra Foods [NAG inside CORA + FOODS]) 
          - EMN (Eastman Chemical [EAST + MAN + (i)C(y) + MICHAEL anagram])
   F: home stadia names: D = DELL (Round Rock Express) + SAF (Mariners)
        - S (Kansas City Brigade) - FE (Lakewood BlueClaws) - ALL (Chicago Rush)
The extra letters spell YIELD.

11. At each moment, exactly one button in the UI does something other
than go gray when clicked.  Which button that is (and its color)
varies randomly each time the UI is executed, but in all cases, after
each button has been used once, a second window pops up with letters
in it.  These letters can be mapped to the buttons in the first window
using the sliders in the second window.  Then, regardless of the order
the buttons were used, taking the letter from each button's location,
using the letter of the color that the button was when used, in the
order used, will spell BARTLETTORDANJOU.  Bartlett and d'Anjou are
both varieties of PEAR.

12. Solve each balance puzzle by putting weights on so that at each
fulcrum point, the total torque on each side (weight * lever arm) is
equal.  Then take the furthest left weight ("that which is left") in
each balance and convert to letters (A=1, etc) to get HOMAN.