1. Soul Calibur 3 (PS2

)
2. Grandia 3 (PS2)
3. Dragon Quest VIII (PS2)
4. Wild ARMs: Alter Code F (PS2)
5. Wild ARMs: The Fourth Detonator (PS2)
6. Heroes of Might and Magic V (PC)
7. Suikoden Tactics (PS2)
8. Legend of Zelda: Twighlight Princess (GC)
9. Civilization 4 (PC)
10. NBA 2K6 (GC, probably)
11. Metroid Prime 3 (GC)
12. Radiata Stories (PS2)
13. Dragonshard (PC)
14. Final Fantasy XII (PS2)
15. Unreal Tournament 2006 (PC)
SC3, despite being a PS2 exclusive

looks absolutely amazing. I'd vastly prefer it for the Cube.
I've been highly dissapointed with the PS2 (and handful of Cube) RPGs, but the PS1 generation's best came at the end, so there's still some hope. Grandia 3 looks like the best of a very solid bunch, followed closely by DQ8, and I've yet to play a Wild ARMs I didn't like. FF12 would be higher if it weren't for its apparently (and appallingly) MMORPG-style battle system.
Heroes of Might & Magic 5 would headline the list if I could only believe it a return to the style of Heroes 2 and 3. From what I've seen so far, the new management hasn't made any attempt to regain the graphical panache of classic Might and Magics, so I doubt they've bent themselves out of shape to restore the gameplay. Still, Heroes is Heroes; I've given hundreds of hours to past versions, I'll give at least a chance to this one.
Civ4 is... Civ. Bah. Alpha Centauri was infinitely superior. I'd pay $100+ for a new Alpha Centauri game, but this is the next best thing, I guess.
Zelda is Zelda. Always fun, never my favorite.
For Metroid, see Zelda.
Who's making the next NBA game, anyway, SEGA or EA? Doesn't much matter, I'll buy it at launch regardless. Still, I'm not as hyped as I was last year.
Dragonshard looks like the first interesting RTS since Warcraft 3. I'll give it a shot, but I don't have high hopes for it. TBS (Turn-based Strategy) > RTS.
UT '06 would be higher if it weren't probably more than a year away. By this time next year, it could be the only one left from this list.

I doubt Heroes V will be out by then, though.