FTL doesn't really fit your criteria but thought it was a cool space game. Starhawk had cool western music but the story was pretty lackluster. In my opinion anyways. Also Firefly is so great. If you haven't seen Dollhouse yet, check it out.
Excluding the PS3/360 era (systems are still too new to accurately give an opinion on in the context of best system ever), The SNES and PSone were probably the systems that I played the most. I think I had the most fun with the PSone with the SNES coming in a close second.
Straight up, watched some episodes here and there when they first aired, but I finally watched the whole series a couple months ago and I really enjoyed it. Loved the first 5 seasons and even season 6 and some of season 7 were ok. But man those last two were bad. Puts a damper on the whole series for me. I also enjoyed the newest movie that came out. This series is great.
In terms of hours spent would be World of Warcraft and a close second Battlefield 1942. I have never played an MMO before or since. BF42 was the first foray into online shooters for me and I was hooked. Well over 1000 hours in both.
Times beaten would probably be Super Mario World or Metal Gear Solid. Its really hard to remember to be honest.