gmail
facebook
digg
endo (my rss reader)
last.fm … I like to see what my friends are listening to. last.fm is also usually pretty good at recommending new music to me. I also like to track which artists I listen to most for the week, month and all time.
jay-baker.com/wp-admin … for obvious reasons
nytimes.com

I find myself checking these site several times a day and “forgetting” I checked them, just like you. To break things up, I use StumbleUpon You probably know what it is, but just in case: StumbleUpon is sort of like channel-surfing for the internet. When you install the toolbar in FireFox, you tell it what type of things you’re interested in and it brings you a random site in one of those categories every time you push the “Stumble!” button. Once there, you can give it a thumbs up or down. The toolbar learns even more what you like and brings you cooler and cooler sites. When you find a cool site somewhere, just submit it to stumble upon and others can vote on it. It’s sort of like digg, but for the whole internet.

Though I don’t regularly do this, when I get pretty bored I check out iTunes podcasts to download. I rather like diggnation. It’s sort of nerdy, but I even downloaded (and listened to) a semester of social psych lectures from UC Berkeley from iTunesU.

One last thing … Here’s two humorous sites I think you and Sam might like:
stuffwhitepeoplelike.com and cectic.

Hope all this helps!