I'll dig out my PS2 game collection to see what I can suggest.

sweet bruh :3
I already have the Kingdom Hearts games on there, i forgot how hard the first game can be, especially with the crazy secret bosses

Okay, here we go:

Mega Man X 7
Mega Man X 8
Mega Man X Collection
Summoner
Metal Gear Solid 2
Metal Gear Solid 3 Subsistence
Castlevania: Lament of Innocence
Castlevania: Curse of Darkness
Armored Core 2
Armored Core 2: Another Age
Armored Core 3
Onimusha
God of War
God of War 2
Escape from Monkey Island
Katamri Damacy
Timespliters
Parappa the Rapper 2
Devil May Cry
Devil May Cry 2
Devil May Cry 3
Marvel Vs. Capcom 2
MS Saga: A New Dawn
Mobile Suit Gundam: Gundam Vs. Zeta Gundam
Final Fantasy X
Final Fantasy X-2
Mobile Suit Gundam: Encounters in Space
Mobile Suit Gundam: Zeonic Front
Mega Man Anniversary Collection

God Hand, Okami, Viewtiful Joe 1&2, Zone of the Enders 1&2.

i've mostly been playing games from my childhood but those do sound like some fun games ^^
I'll give em a try

you can also add Metal Gear Solid 2&3, Devil May Cry 3, and Bloody Roar 3&4

Looking at my ol' PS2 collection. Let's see...

- Grand Theft Auto: San Andreas (I recommend this)
- Metal Slug Anthology
- Canis Canem Edit (Bully in USA)
- Metal Gear Solid 3: Snake Eater

The Ratchet and Clank Trilogy (since the movie is coming out)

I would go Battlefront 2

Sly Cooper Trilogy!! It's the most underrated PS2 game ever!

Alrighty got em
And they actually run really slow for some reason XD
The frame rate for all three games is really slow

There's ratchet and clank 1-5, jak and daxter, dark cloud, battlefront, God of war and so man more