hmmmmm
i have to say i love the fact my ps3 remote is bluetooth, it means i can use it outside to change my music (and upstairs/bathroom if i want to answer Jeremy's question). as i have my home cinema kit in the corner of my lounge (with tv central) my V+ box never seems to work without me pointing the bloody thing into the corner. bluetooth or BT style remotes for everything could be very cool.
@ "you can point the remote almost completely behind you away from the television and it will still change channels/work as intended?" - you sure you arent bouncing the signal off walls in your house? i used to be able to switch on my lights in the lounge from the kitchen by bouncing the signal off 3 walls :)
btw - for a cool toy try remote controlled dimmer switches :) ive got them in my house :)