The Satechi WR-C100 Wireless Remote Control is a decently made, reliable and easy to use wireless remote control. With a price tag of $80 to $100, it's a good value for the photographer who needs a dependable wireless remote control regularly. Satechi's customer service has a good reputation based on what I've been reading on the Web, but I haven't had to test it so far. One thing to be aware of is the documentation is kind of weak. Still, it's not hard to figure out the basic operation of the unit by just playing with it.
Disclaimer: Satechi provided me with an evaluation unit of this product for the David Busch Quick Snap Guide to Photo Gear.