Of course. A PS3 Slim is a great deal for what it is ($300). It has free online, great games, blu-ray player, dvd player, photo and music support, wi-fi, ethernet, etc. etc. It has many many robust features. It's a much better deal than Xbox 360 because it doesn't break as much and you don't have to pay for wi-fi or online which adds up a lot, not to mention the game exclusives the PS3 has like:
Uncharted 2
Demon Souls
Ratchet and Clank A Crack in Time
Resistance 2
Killzone 2
Warhawk
Little Big Planet
MGS4
Motorstorm 2
God of War Collection (God of War 1 and 2) playable on PS3
etc.
Games to look for, later on:
Gran Turismo 5
God of War 3
Final Fantasy 13
Heavy Rain
Quantum Theory