Corey Haim and Corey Feldman aka The Two Coreys aka the Haimster and the Feldog. The 80s highest paid teen actors in a kooky 'bodyswap' film from 1989 (the whole bodyswap thing was an 80s thing for sure: Big, Vise Versa, 18 Again). This also starred the budget Justine Bateman aka Meredith Salinger (who I always liked more anyway) and also stars William McNamara ( Copycat) and Piper Laurie and Jason Robards.
Here's a clip (Feldman was going through his 'Michael Jackson' phase):
http://www.youtube.com/watch?v=gYKmRi0t3Uo&feature=relatedInterestingly, four days before filming, Haim broke his leg teaching his Mum to drive a motorbike (!?!) and the script had to be altered to include his injury.
I had a wood mounted poster of this in my bedroom for years, and just picked up a copy from the cool people at DVD Pacific, and had to share!