I've been using Plex for Mac, and it's quite good. Not sure if it counts as 'lightweight', but it's fantastic. I load TV shows or movies into it (non-iTunes though).
I have it set up on my Mac Mini (connected via HDMI), and I can remote control it with the Apple Remote, but there's also an iPhone/iPad app that can both remote control (up, down, select, back), remote browse (tap on a movie or TV episode to watch it on the TV), and stream (tap on a movie to watch it on your iPhone/iPad).
It also has the nice feature of being able to automatically find any other Plex instances on the local network and automatically stream from them as if the media were local. That way, you can connect Plex to your media centre in the basement, but watch the data anywhere in the house (e.g. on a smaller TV in the bedroom or an iMac in the office).
It's really a great ecosystem, and if their partnership with LG[1] pans out, it might get that much better.
I have it set up on my Mac Mini (connected via HDMI), and I can remote control it with the Apple Remote, but there's also an iPhone/iPad app that can both remote control (up, down, select, back), remote browse (tap on a movie or TV episode to watch it on the TV), and stream (tap on a movie to watch it on your iPhone/iPad).
It also has the nice feature of being able to automatically find any other Plex instances on the local network and automatically stream from them as if the media were local. That way, you can connect Plex to your media centre in the basement, but watch the data anywhere in the house (e.g. on a smaller TV in the bedroom or an iMac in the office).
It's really a great ecosystem, and if their partnership with LG[1] pans out, it might get that much better.
1. http://www.engadget.com/2010/09/03/plex-announces-paternship...