I always used it for Keynote presentations.
Trying to decide whether I should order a matching aluminum one now.
I did.
I still use front row when traveling and don't feel like watching crap TV on the road. I set up my MBP on a table and watch movies and such off my hard drive.
I hope Front Row can be used in Lion (perhaps copying the Snow Leopard .app and using it in the new OS). If the feature is removed, whats the point of keeping the IR port at all?