Rear brake in front of the seatstay! I like! I did this on my "Team Dumpster", a frame hit hard by an SUV I picked up for $20. Liked it so much my best bike also features it. (Sadly, I cannot do it on the rest of my bikes. Canti and centerpull. My sidepull/dual pivot fix gear has such long and shallow dropouts that I need the caliper as far back as possible to keep it near the top of the rim.)

Ben