I got my Wii Fit this week and Wednesday was my first day playing it. I've been on it every day since. Like everyone else I find it a lot of fun.
My lower back doesn't let me play it as much as I'd like but I've been able to make it between 30-45 minutes each day for the last couple of days.
I found these forums by searching for a Wii Fit routine actually. What I'm doing so far:
~ Start with Yoga (I've only got about half the poses unlocked so far)
~Move to Aerobics (Super Hula Hoop, Basic short run, advanced step and I just unlocked the rhythm boxing)
~Then the Balance Games (Ski Slalom is my favorite, Ski Jump, Soccer even though I'm bad at seeing what's coming)
~If my back doesn't hurt too much by then I go back and do a couple of the yoga moves to "cool down".
I haven't done any of the strength moves yet just because I don't have a lot of space to really be able to do them properly. Plus I don't want to do too much too soon and then not be able to do anything. My back is already pretty sore from all the bending the other games give me but I really enjoy it