This is a remarkably good movie that no one's ever heard of. Dennis Quaid is delightfully lunatic in the movie, and Arliss Howard is great as his totally opposite brother. And who's ever heard of Arliss?! (I think he's actually married to Debra Winger.) And Debra is great. The two brothers compete for her affection, and the fire department sings barbershop quartet as they fight fires. It's a funny movie with several character actors you'll recognize.
The special effects were created by Ricky Jay and Michael Weber. Jay is the premier sleight-of-hand artist in the world and was interviewed just after he did his work for "Wilder Napalm" for an article in "The New Yorker" - http://www.newyorker.com/archive/1993/04/05/1993_04_05_054_TNY_CARDS_000362341?currentPage=all