Recommendations for a Universal Remote?

cpritchett asks: "I'm starting to work on my home theater system, but am wondering what to do in the way of a universal remote. Yes, touchscreen remotes and ones that give you TV listings may be nice, but they are also pricey and the touchscreen doesn't offer the nice, familiar, tactile feel of a remote we've all grown to love. So, what's your recommendation for a good universal learning remote for under $50?"