Ever since I graduated college I've been a pool junkie. I just love it. Everytime I go into a bar, my eyes scan the place for a pool table in the hopes that I can find a couple of guys to school in a game of 9 Ball. Recently, I've been getting my in-office Pool fix with MacPool 4.3.0, which is a free computer simulation game for macs.
As far as simulation games go, this 9-Ball Pool game is pretty commendable. It's easy to play, designed with a “Smoked Window” interface, so you just have to shoot the lowest ball on the table, and the one who pockets the nine-ball first wins. You can save your preferences so they are ready for you next time you're ready to have some faux Pool fun. Works for Mac OS X 10.2 or later. Download MacPool for free from Apple.com. Need a PC Pool game, just read more
PC users can download a fun pool game from Astatix.com.