Now that you know which cable(s) you're going to use, how's about giving Daniel a bit of advice on splitting up the signal?
"What is the best HDMI splitter on the market? I want to split my signal to a 42-inch LCD TV (about 9-feet away from the source) and a projector (through a 50-foot HDMI cable). Considering the distances needing to be covered, would a powered splitter be better than a passive one?"
We'll go ahead and assume Daniel's looking for one that can pass a 1080p signal without degradation, so recommending that Dollar Tree box you saw probably isn't the best thing to do. On the real, feel free to shout out any positive / negative experiences you've had with extenders and switches -- hopefully one of 'em will fit the bill here.
Got a burning question that you'd love to toss out for Engadget HD (or its readers) to take a look at? Tired of Google's blank stares when you ask for real-world experiences? Hit us up at ask at engadgethd dawt com and keep an eye on this space -- your inquiry could be next.