Holy crap, did this list build fast!
Yessir. It's one of my favorite consoles ever. Lots of input on my end!
1. Final Fantasy XII
2. Metal Gear Solid 3: Snake Eater/Subsistence
3. Devil May Cry 3
4. Shin Megami Tensei: Persona 3/ P3FES
5. Shin Magami Tensei: Persona 4
6. Shin Megami Tensei: Nocturne
7. Metal Gear Solid 2: Sons of Liberty/ Substance
8. Star Wars: Starfighter
9. Shadow Hearts: Covenant
10. .hack (Infection, Mutation, Outbreak, Quarantine)
11. Dragon Quest VIII
12. Shadow Hearts
13. God of War
14. Disgaea
15. Jak and Daxter: The Precursor Legacy
16. Shin Megami Tensei: Digital Devil Saga
17. Raiden III
18. Shadow of the Colossus
19. Valkyrie Profile 2: Silmeria
20. Klonoa 2: Lunatea's Veil
21. Silpheed: The Lost Planet
22. Romance of the Three Kingdoms VIII
23. Front Mission 4
24. Silent Hill 2
25. .hack//G.U. (Rebirth, Reminisce, Redemption)
26. Odin Sphere
27. Rogue Galaxy
28. Onimusha: Warlords
29. Onimusha 2: Warrior's Destiny
30. Grandia III
31. Kingdom Hearts
32. DoDonPachi Dai-Ou-Jou
33. Katamari Damacy
34. SSX Tricky
35. King of Fighters XI, The
36. Tony Hawk's Underground
37. Contra: Shattered Soldier
38. Wizardry: Tale of the Forsaken Land
39. Dynasty Warriors 2
40. Chikyuu Boueigun 2, The
41. Ar tonelico
42. Wild Arms 3
43. ICO
44. Dark Cloud
45. Suikoden V
46. La Pucelle: Tactics
47. Guitar Hero
48. Espgaluda
49. Need for Speed: Underground
50. Suikoden III
51. Final Fantasy X
52. Radiata Stories
53. Grand Theft Auto III
54. Nightshade
55. Okami
56. R-Type Final
57. Garou: Mark of the Wolves
58. Final Fantasy X-2
59. Hot Shots Golf 3
60. SOCOM: U.S. Navy SEALs
61. Tenchu: Wrath of Heaven
62. King's Field: The Ancient City
63. Mister Mosquito