Let's see....
Blue: Squirtle
Yellow: Pikachu ( sadly there was no other option...

)
Silver: Cyndaquil
Gold: Totodile ( for a change... )
Saphire: Torchic ( but i think that if i hadn't seen a pic of Blaziken before i chose, i might have gotten mudkip instead. )
Ruby: Torchic ( again! Blaziken is just super cool )
Pearl: Chimchar ( yet another cool fire type starter )
Platinum: Chimchar
Fire red: Charmader
Heart Gold: Cyndaquil
White: I don't have it yet but i'll probably go for Tepig
Anyway, in general the fire types tend to be cooler most of the times in their final evolutions than the others. And they also offer a much easier gameplay, as they tend, taking also into consideration their secondary type, to eliminate the gym leaders and the League a bit easier than the others....