I'll admit, I never finished Halo 2

I forget what life event (or other game) came along and interrupted my single player in Halo 2, but I never got back to it.  I still have the game and I'm wondering how important it is for me to finish it before starting Halo 3.  I understand it's fairly brief and the game ends rather abruptly.  Do I need to add Halo 2 to the list of games to hammer through before I play Halo 3?

Continuing with this week's underwater theme, here's my cartoon take on those fish that have the little light they dangle in front of them to attact other fish to eat.