Most of the Dragon Quest VIII soundtrack was amazing. I think I actually like Koichi Sugiyama's score more than Nobuo Uematsu. They're both excellent composers, but Sugiyama's music really goes along well with the adventerous mood of the Dragon Quest series.
Some more favorite tracks:
Final Fantasy II
Rebel Army theme
Dark Cloud 2
Battle theme
Star Ocean: Till the End of Time
Collapse of Fraility
Adventerous
Megaman 2
Metalman's stage
Bubbleman's stage
Chrono Trigger
Robo's Theme
Magus' Theme
Frog's Theme
And, the following are from the 2D Sonic the Hedgehog games:
Green Hill Zone (Sonic 1 Overrated as hell, but it's really nostalgic for me)
Robotnick theme from Sonic 2
Marble Garden Zone, Act 1 (Sonic 3)
Ice Cap Zone (Sonic 3 Another overrated track.)
Mushroom Hill Zone (Sonic & Knuckles)
Sky Sanctuary Zone (Sonic & Knuckles)