Intermittant power window failure
 

When I drive home, I open the windows. When I get home, the passenger side window does not operate. Everything else works. An hour later, when the car has cooled down some, it works. They are both on the same fuse.

I was planning on checking the voltage regulator. Any ideas?

try pulling the window switches and spraying some contact cleaner in them (or carefully pull them apart), they may just be dusty/dirty, common problem on 15+ year old cars :)

relay....going bad? Try a new relay or swap it with the horn relay to test it.