I saw this on someone's profile, I can't actually remember who's (Sorry!). But I thought it looked kinda cool!
Basically, put in each letter of the alphabet into your URL bar thing, and see what comes up! Its interesting.

a - asda.co.uk (Wha?)
b - bbc.co.uk/iplayer/
c - channel4.com/programmes/4od
d - deviantart.com
e - eastmidlandstrains.co.uk
f - facebook.com (Of courrrse)
g - google.com
h - hotmail.com
i - imdb.com
j - just-eat.co.uk (nomnomnom)
k - kongregate.com
l - last.fm
m - maps.google.co.uk (I like to stalk)
n - nationalrail.co.uk and then flicked to news.bbc.co.uk/weather
o - nothing.
p - photobucket.com
q - nothing
r - riverisland.com
s - shuspace.shu.ac.uk (My student portal)
t - twitter.com
u - ucas.ac.uk
v - vgcats.com
w - facebook again. Apparently its my most popular www.
x - xashtarix.tumblr.com
y - youtube.com
z - nothing.