(I didn't know Gundam Wing had Lagrange points. I approve.)

It does! Five space colonies, one at each Lagrange point. I tend to think that sci fi movies and shows and anime put tons of stuff at Lagrange points, but when I stop to think about that it's really just that I assume Gundam Wing did it because it was a trope, which is not necessarily the case. Anyway, I agree with cyphomandra about the nostalgic fondness. (I haven't watched or read Planetes, but I keep meaning to, because I've heard good things.)