Yeah I plan on playing 2 pretty soon after if not straight after. Never got around to playing 2 when it came out.Kotor 2 was severly underrated (Obsidian has a knack of creating great game which gets heavily criticised upon release only to have cult folllowing later, see: FNV). Kotor 2 actually improved on Kotor in many ways, including combat and skill tree abilities, and it some ways was much more fun to play.
While I think the oiginal Kotor has the best story of any game out there, Kotor waa a little more nuanced and the dialogue had a lot of subtext as opposed to Kotor, so in some ways I enjoyed it more, you really should give it a go soon... after of course you play evil playthrough of Kotor 1.