The folks at Eidos are organizing a metaphysics conference which will take place in July 2008, and are currently calling for papers on topics in metaphysics suitable for presentation in 40 minutes (leaving 20 minutes for discussion).  Speakers currently lined up include Kit Fine and Robin LePoidevin.  If past experience is anything to go by, it should be fun!  The deadline for submission of one-page abstracts is 30th March.