Cisco switches are in my opinion pretty damn good. I've used them alot and have not really had too many problems. Marconi/Fore Systems also make a few nice products.

For a home network I would tend to think that an unmanaged switch would suffice. I would only get a managed switch if your network is incredibly large (or will grow large), if you need to create VLANS to segregate some traffic, or if you are going to switch to something other than ethernet (i.e. ATM, etc.). A managed switch won't have as many option to add blades or modules.

Although,,, I think I saw a 4 port Linksys switch (unmanaged) at Office Max or somewhere for like $40. At that price you can't go wrong...