Best games available on the net?

Hey folks-

I'm interested inpickingup a few games over the net, but I thought I'd ask around first and see what you opinions. I'm looking for two types of games - either bigger releases available as digital pruchases or those made by independent developers. I loved the Pocket Tanks game because of its relative simplicity and fun vibe. Any other ideas?

Sam & Max.

There's many great P2P MMO's out there. You can check out mmorpg.com if interested.

Command & Conquer is now freeware. Also, check out www.caiman.us or www.gamehippo.com for independent games.

Free:
Nethack
Soldat
N
Scorched Earth
Enemy Territory
Any ABA Games shooter

Pay for:
Mount and Blade