Along last five years I've played Baldur's Gate 1&2(+TotSC&ToB) and SW:KotOR and considering all the GotY awards and how they are often listed among best games ever, I was greatly disappointed to all three. (Thought this just shows I don't like western RPGs.)
Of sequels to games I liked:
- Wing Commander 3 is my least favorite (of my favorite series, as I keep telling)
- Dragon Quest 5, as 4 was really great
- Final Fantasy Legend 2 (first is much better)
- SW:Battlefront 2 (SP, among things)
- Leisure Suit Larry 2 - worst game sequel ever
- Riven: sequel to Myst (worst of the five Myst games)
- Monkey Island 2 has reputation as the very best of classic Lucas adventures, but I wouldn't put it in top 5; not even better than MI1