I make mini cheesecakes in cupcake wrappers. The last ones I did, I used an Oreo in the bottom of each cupcake wrapper and put Bailey's cheesecake in them (recipe here:
http://www.cooks.com/rec/view/0,196,...229207,00.html). I melted some chocolate melts and put them in a bag and just drizzled chocolate over the top of them to make them more decorative. They were the hit of the work Christmas party.
ETA: You only have to bake them about 25 minutes when in the cupcake papers instead of the spring form pan.