I did this back in September, when "instant search" became available on Google. Basically I typed each letter in and noted the first result.
A is for "Amazon"
B is for "Best Buy"
C is for "Craigslist"
D is for "Dictonary"
E is for "Ebay"
F is for "Facebook"
G is for "Gmail"
H is for "Hotmail"
I is for "Ikea"
J is for "Jewel"
K is for "Kohls"
L is for "Lowes"
M is for "Mapquest"
N is for "Netflix"
O is for "Orbitz"
P is for "Pandora"
Q is for "Quotes"
R is for "Ravinia"
S is for "Sears"
T is for "Target"
U is for "UPS"
V is for "Verizon"
W is for "Weather"
X is for "XBox"
Y is for "Yahoo"
Z is for "Zappos"
A is for "Amazon"
B is for "Best Buy"
C is for "Craigslist"
D is for "Dictonary"
E is for "Ebay"
F is for "Facebook"
G is for "Gmail"
H is for "Hotmail"
I is for "Ikea"
J is for "Jewel"
K is for "Kohls"
L is for "Lowes"
M is for "Mapquest"
N is for "Netflix"
O is for "Orbitz"
P is for "Pandora"
Q is for "Quotes"
R is for "Ravinia"
S is for "Sears"
T is for "Target"
U is for "UPS"
V is for "Verizon"
W is for "Weather"
X is for "XBox"
Y is for "Yahoo"
Z is for "Zappos"