I was lucky enough to have a Dragon's Lair game to evaluate! Set up for free play in my office no less :D I worked for Taito and we ordered one to "evaluate" from Sega. I was able to walk through all the scenes without it costing me a million $$.
There were several PC versions of the game made, most sucked because they were 16-color graphics (or less!) even in the days of V/SVGA. They finally made a decent port of it eventually. Check some of the abandonware sites like theunderdogs, etc. you can probably find a copy floating around.
Maybe pointless nowadays, but if you have the time or inclination, you can walk through it and learn the sequences for free, at least.
My vote is for pinball. The randomness makes every game unique, whereas the other games are either repeating scenes or levels and once you learn them by rote, all the fun and interest is gone.