First was a 1/35th Scale Tamiya Panther, biggest 1/48th Scale B-17G, looked great until I sat on it arghhh, and then of course mom gave them away while I was at college
mine was an airfix churchill....couldnt fit all the wheels so i had a churchill with 12 sets of bogies lol. still have it, still use it in my wargames (mainly cause its the only brit tank i have) LOL oh the irony
On a technicality, my first ever model kit completed was the Japanese carrier Akagi I got three days ago(and it didn't turn out that bad, either )