My Castlevania set is on hold until I can build up the cash afford the last few boxed copies I need. I've been very slowly adding to the Saturn collection though, working toward a complete US set. If all goes well I should hit the 100 Saturn games threshold soonish.
Other than that, not much really. Except working on finding replacements for the PS2 games I traded in years ago.
Then of course, this may count as collection wise, there is my box art project for displaying my GBA goes in DS cases. And the epic Dragon Quest Monsters: Caravan Heart project Soera, Amauriel and I are slowly working on...