Hahha I was going to say! We had a 36" CRT growing up. It took 3-4 people to move the fucker. It was HUGE. As I got older then made them lighter and less boxy, but still a 36" was heavy as fuck. I couldn't even imagine anything bigger.
Also, Sonic's Ultimate Genesis Collection on the 360 is worth picking up.
The nostalgia is there when you hold that old controller and boot up a game. Its not the same as playing it on the emulator or with an xbox/ps controller.
However, the nostalgia also wears off pretty quickly. Quick enough to not justify paying so much for games. And of course you want them CIB, not just loose carts laying around. Then once you start playing the game you realize wow...this didn't hold up at ALL. I think NES/SNES/Genesis games do okay and hold up. However, Saturn, Dreamcast, N64, PS...god they just don't. Especially once you start playing 3d games. Some first party ones do, but others? Egh. Especially FPS. Golden eye, Perfect Dark. So god awful to play now a days.