Basically what he said :P but here are the ones i personally like
K1 Force Pack 2.0
http://knightsoftheoldrepublic.filef...rce_Pack;97281
AIOFPM version 3.0.1 (all-in-one-force powers) - KotOR 1 -
http://www.lucasforums.com/showthread.php?t=135226
Ord Mandell
http://www.lucasforums.com/showthread.php?t=136575 (i think the link is broken, go to redhawkes site and download it)
Brotherhood of Shadow Solomons Revenge
http://knightsoftheoldrepublic.filef..._Revenge;99985 (Download the patch for it as well. And this is a VEEERRRRRYYY long mod, its fun but at the end all you get is an armband that spwns sith lol)
The Roleplay Padawan
http://www.lucasforums.com/showthread.php?t=137781
Yavin 4
http://knightsoftheoldrepublic.filef...om/file/;93497 (awesome mod, give you so much xp and items for your inventory)
Revans Flowing Cape and Belt mod
http://knightsoftheoldrepublic.filef...m/file/;107623 (fixes the animations on revans robes)
KOTOR Visual enhancement mod
http://www.lucasforums.com/showthread.php?t=207074 (never used it but looks very nice)