I really love the arcade games of the 90s, the ones that used to sit outside every corner store and hot food/fish and chip take away joint, wish I was more computer savvy and knew how to get them. One day if I get rich enough I'll pay someone to make an arcade machine for me with all the cool games on it.
My favourites were -
Fatal fury (and sequels)
Sunset Riders
King of the monsters 2
Aliens vs Predator
Knights of the round
Final Fight
Teenage Mutant Ninja Turtles
Art of fighting
World heroes 2
Samurai Showdown
Mortal Kombat 2
Cadillacs and dinosaurs
Mutation Nation
3 count bout
Warriors of fate
Apart from that, I also really loved mutant league football on the megadrive, and a bunch of msdos games like commander keen, stunts, cosmo's cosmic adventures, etc etc.
But yeah the arcade games have a special place in my heart because I remember never having enough money to play them as much as I wanted, they always left me wanting more.