I'm pretty easy...army builders are always nice, I never picked up any of the Target CUP AND FIGURE sets and now I'm kinda regretting it (don't care much about the figures, but the cups are nice). Figures from the Saga Collection Carkoon Wave would be sweet if they've hit in your area. Anything I can use for displays or dioramas -- pieces from Cinema Scenes or Vehicles or Playsets or Deluxe Figures or anything that looks like it would spice up a scene would be cool too.
Basically, when in doubt, go for army builders -- battle droids, clones, OTC troopers of all varieties, anything. Or, screw it, surprise me. Like I said, I'm pretty easy. And if I don't like it, I'll just give it to somone for NEXT year's secret santa.