Watching the season premiere of "The Office," Jim IMs Pam and we can see that he plays PokerStars on his work computer (an HP):

Earlier we saw him iChatting with Pam on a MacBook.
Though Kevin won a WSOP bracelet, Jim also plays a mean game of poker in the charity casino night episode when he confessed his feelings for Pam.
He also plays Bodog:

This is what I do when I'm not busy screen grabbing cracked pocket Aces and Kings.
I'd be lost without streaming TV. My laptop finally died after 5 years, so replaced it with a desktop machine that runs video like a dream. Couldn't wait a couple weeks to order from Dell, so I rented a car and popped by Best Buy to pick up an already configured Dell.
Everything hooked up surprisingly well with no problems so far on Vista.
Then spent the rest of the weekend catching up on season premieres, courtesy of all the networks' sites, Hulu.com, Fancast.com, and various other means. NBC even premiered shows online a week ahead of time, so I didn't have to wait for "Chuck" and "Life." ("30 Rock" will also premiere online on Oct. 23.)
Dual core lets me watch a high definition video, rip a DVD, update my iPhone, scan porn, and play four tables without noticing any processor slowdown.
"Terminator: The Sarah Connor Chronicles" and "Heroes" have both greatly improved this season, and I'm tempted to stay up till 4 a.m. when FOX and NBC put them up online or shield my ears from spoilers tomorrow at work.
Gads, what has my life become?