I would love to have a bitchin' system but I can't afford to go all out.
I have a 55" plasma screen downstairs which I watch most of my movies on, but I don't have any decent speakers because I live in a terrace and the walls are paper thin, I don't think I'd be too popular if I watched my horror with surround sound, especially as I usually watch between 3-7am
Besides, the speakers in my TV are pretty good, more than good enough for me right now.
I watch a lot on my 17.5" Sony Vaio too, and I have watched a few on my iPad. If I really want to see something with stunning graphics I'll make sure to watch on the TV but I enjoy watching on my laptop