Here are a few that I shall put up:
http://www.pandora.com/
Really good and free internet radio. an awesome way to find new music

http://www.cinemassacre.com/new/?page_id=3130
Here is a site that i spend hours on, this dude reviews old shitty video games and shows how frustrating they get by getting drunk and cursing. very funny IMO

http://www.mochigames.com/
A cool site to play good flash games. you can pay for upgraded shit in game or to unlock a few full versions but its not necessary. zombie assault 2 is my favorite

http://www.redbubble.com/
Cool site to buy random shirts and art off of random vendors. Might be something mods may want to look into in regards to getting rhhf shirts to people easily. there are thousnads of designs and most go for 20-25 bucks

http://www.xbox360achievements.org/
im a straight achievement whore and here you can see every achievement easily and create lists of what you've already completed. i like this site a lot

http://www.ps3trophies.org/index.php
same as 360A but with ps3 trophies

http://www.woot.com/
Daily sales, usually a decent product that you would get good use out of at a cheap price. they also do a daily shirt thats 10 bucks and those are sometimes pretty cool

http://armorgames.com/play/1128/desktop-tower-defense-15
one of the funnest games i've ever played

http://omegle.com/
most of yall know this already but omegle can be cool or real creepy. you can hop on and harass someone real quick or attempt an actual conversation with someone 1000s of miles away from you and i find that pretty cool sometimes

Thats all for now