Best PS2 games

I was at gamestop today and I saw some good games for really cheap that I used to play a lot (MGS2 for 99 cents and TH Pro Skater 4 for 2 bucks) and I was thinking I never really got to play a lot of good PS2 games as I got the PS2 right before I got a 360 and when I got the 360 we kinda just forgot about the PS2. Now that my Xbox is broken (and I finally got around to buying an AV wire and working controller for the PS2) I will probably start using the PS2 a lot more. What are some of the best games for it? I looked around online and most of them were RPGs, which I'm not to fond of. Are there any really good games of other genres?

I already have:
Jak 2
GTA Vice City
Gran Turismo 3
MGS 2
Tony Hawk Pro Skater 4

- Grand Theft Auto: San Andreas.

Arguably the best GTA to date. I still see GTA SA VS GTA 4 topics on occasion.

- Timesplitters: Future Perfect.

Quite a fun little shooter and the best TS to date.

- Killzone.

The original to the series.

- Cold Winder.

I found this a pretty fun little shooter to, and it seems to get overlooked a lot.

Racing?

There are a ton other shooters on PS2 like SOCOM, Medal Of Honor, Call Of Duty, etc. However there in no shortage of racing. Burnout 3: Takedown, Burnout: Revenge, Burnout: Deliminator. Most of the Need For Speed games all the way up to Pro Street. The Flat Out series, Twisted Metal: Black, etc.

PS2 is one of those consoles where there is almost to much stuff to list. It has a crap ton of games in virtually every genre.

Sly Cooper series
Star Wars Battlefront I and II
Jak and Daxter (The first one is much better than Jak 2)

Will think of more great PS2 games.