whoa there, u missed a lot xD u missed the glory of the Zeon & the Feddies, the Universal Century i mean

, well its not so bad, at least you watched Seed, so you get the whole gundam thingamajig thingy.
try watching the very first series, the one-year-war, best for starters

some say it sux a lot, maybe because of its cozy not-so-refined anime (well, what to do, old anime

) but i liked it a lot XD, but for me, i liked Stardust memory series, its my fav though, watching dendrobium pwnaging zeon, lol XD
short saying, its never too late to watch old gundam animes right? lol

although i watch a lot of gundam and i support UC but my favorite series is X-Gundam! second is Turn A! then onli come 08 MS team and stardust!