@hphukan
I was there for Plant Science weekend. It was fine-- they gave us tours of everything and tried to sell us on MSU (did a good job). If you know who you want to work with, however, if might be advantageous to just skip the organized weekend and spend more one-on-one time with your prospective adviser. The weekend had a lot of programs that were not relevant to me.
@ninnescahsis
When I visited, I saw a grad student house in eastern Lansing (the city, not East Lansing). It seems that there are plenty of small houses/duplexes there that students rent or even buy (housing is super cheap). I'm curious if any students live in the Old Town area still, too. I agree about the bike shop, that would be nice.
I'm hesitant to trust that post from 2006. I think Lansing has probably changed since then. Also, it sounds like that person and I have different tastes in neighborhoods. Again, if someone who lives in Lansing wants to give a more thorough run down of Lansing neighborhoods and pros/cons, that would be much appreciated.