I was just going to make a post about this. Basically, I'd like to see a "QUEUE SHOW" feature, where in additon to "Play", there'd be an option "Add to Queue". The Queue would play in sequential order.
If TiVo really wanted to go crazy, they could create a few options in the "Now Playing" area, like "Randomize Queue".
I'd also like the ability to batch delete shows. But I think both of these might be available with some TiVo hacks...just upgraded my 40-hour to a 320gb HDD, so now with "up to" 363 hours (actually, it's 103 hours 16 minutes at best Quality), I'll have a lot of stuff on there.