The music was pretty awesome. If you don't have copies of the tracks, you can find 'em here: http://gh.ffshrine.org/soundtracks/g
I really don't know which game series I could put as my favorite. There are just too many to choose from.
Earthbound was a surprisingly long game with a lot put into it.
Golden Sun was a great series and definitely one of my all time faves.
Lost Kingdoms combined card collecting and upgrading with live action battles really well with great music and monsters.
Folklore was similar to Lost Kingdoms, with similar game play, good music, and a very interesting story and lore.
Custom Robos was a lot of fun and customizing make a huge difference in play style, while the dialogue on the gamecube game was actually pretty great.
Mario Kart 64 and Double Dash were the best of the series. The rest just aren't fun.
Donkey Kong Country 2 shines as the best game of that series in just about every aspect. It was just so fun and the physics just flowed.
Halo- I've sunk a lot of time into the series' multiplayer over the years.
Megaman Battlenetwork series was great for real time battles with a lot of depth to combat strategies. You had to dodge attacks and position yourself to land your own and so many different attacks and combos to use...
Animal Crossing is its own breed of game that is surprisingly enjoyable with so many different things to do and collect.
Phantasy Star Online- it's like Monster Hunter, but way better. Not exaggerating, just simple statement of fact.
I'm sure there are others I'm forgetting right now but my ps4 calls me away...