Best of Its Franchise?

There are some major staples of video gaming I never got into. Either because I missed out not having the right console or I spent too much time with other franchises.

For those that have had more experience what are your favorite games from the following franchises?:

Mega Man
Final Fantasy
Sonic (I've only played Sonic 2)
Street Fighter
Tom Clancy
Resident Evil (I've played a bit of the first one and most of the very different 4th one)
Tomb Raider

Thanks in advance for the input!