I used to replay both games around Christmas time, my usual party is:
BG1: Imoen, Minsc, Khalid, Jaheira, Dynaheir me playing a tank (paladin or warrior)
BG2: Imoen (or Nalia), Minsc, Jaheira, Aerie, Mazzy still playing a tank
a couple memorable playthroughs were with:
BG1: Imoen, Ajantis...