Went to the National Videogame Museum yesterday, so I got a few classic minutes... (all times approximate)
Jaguar
Tempest 2000 - 30 min (This was actually played on a Jaguar in store demo kiosk they had set up at the museum. Got 364,537. Good enough for 3rd place on the TOP GUNS scoreboard in the game. I think I was the only one with a score entered, though. Most people prob don't really try I guess.)
Vectrex
Berzerk - 5 min (Another display piece at the museum. The Vectrex is set up on the counter of their "Video Game Crash Store" vignette. They have it set up like a store from the crash with clearance signs and going out of business signs and stuff... with a counter and register and whatnot that people can sit behind and take pictures. I don't know what score I got, but it was fun to be able to play a Vectrex. It's a system I've wanted for quite a while.)
Atari 2600
Pac Man - 2 min (This was played on one of those big Atari display pieces (I attached a pic). I saw my son playing with it and realized he had started a two player game of Pac Man. So we took turns for a bit going back and forth. He needs more practice. lol)
Pitfall - 5 min (Son playing this one. They had it set up in one area that was talking about third party games. The joystick in player 1 port was messed up, though... and "up" on the joystick wasn't working, so he couldn't climb up the ladders. I reached below and swapped the plugs so the other joystick was in port 1 and it worked fine. You're Welcome NVM for fixing your display. lol)
C64
Gorf - 5 min (Not me, but my son. He tried out som Gorf on one of the displays in the vintage computer section. I wasn't sure what it was at first... was thinking Gorf, but wasn't familiar with the C64 version, so I was second guessing myself.)
Atari 800
Pac Man - 3 min (Much better version of Pac Man than the 2600 version. I played this on the vintage computer section.)
Apple IIe
Karateka - 5 min (My son played this one. He was getting pretty decent at killing the baddies, but I feel he didn't get very far. I told him about how, if you approach the princess at the end wrong, she'll kill you and he thought that was pretty silly.)
Arcade
Frogger - 5 min (Son on this one again. We had actually been talking about Frogger the day before because I have some Frogger magnets on the fridge. He got the 1st place on the scoreboard, but I don't think many people had played it... probably gets turned off and resets every night. His score wasn't really that high, but high enough. No George Costanza here. He played some other games, too, but not sure what because we split up in the arcade.)
Galaga - 5 min (I used to play this quite a bit, but something about this machine didn't feel right. The shots weren't coming out like I was used to or something. Didn't do too hot.)
Gyruss - 3 min (I was better at this on the NES.)
Sunset Riders - 3 min (I was pretty terrible at this game, but it's really the first time I had ever tried the arcade version. Still... didn't even get to the first boss.)
Robotron 2084 - 5 min (I always have to try this when I see it. Just such a fun game and it just seems to be the epitome of 80's arcade for me. The lights, the sounds, the crazy gameplay. Such fun. But I'm not that great. I got to about the fifth level or so?)
Playstation
Crash Bandicoot - 5 min (Son playing this one. Not sure if he had played it before. I always liked how colorful this game was and all the fun sound effects.)
Spyro the Dragon - 5 min (My son was playing this one, too. They had it running on a PS2 for some reason, but it was Spyro 1 I believe, so in the Classic Tracker it goes.)
And that's all I can remember right now.