I like Mario 3 enough to pretty much play it anytime I'm in a funk, it brings me out. If I'm drunk, Mario 3 is a good barometer of how far gone I am. If I can't make it past 1-6 then I don't need to be operating machinery. I've got the logo for the game tattooed on my arm. I have 3 copies of the game. One CIB, one for playing, and the one I got for Christmas the year it came out.
Mario 2 I borrowed from a pal in elementary school...and it never actually made its way back to him. Fun game, never beat it unassisted though.
Super Mario Brothers i have never beat. 8-4, even with a walkthrough in front of me, is still my achilles heel.
All the love in the world for Super Mario World, SNES, my 2nd favorite of the games.
I never got too into Mario 64, didn't own a game cube and by the time I got a Wii my gaming was limited to weekly guitar hero parties at a friend's house. On the switch we have a bunch of the Mario games already released but I'm never home to fool with them.