So I got thinking, Sega spend all this money on new Sonic games when really, more people play the old classics in compilations for the 6th gen systems or on live arcade/virtual console. Taking a bit of inspiration from Pac-man CE- one of the most if not the most inspired franchise regenerations of all time- I hit upon the idea that what Sega should do is bundle together say, 15 or 20 classic levels from past Sonic games and release it as a 'best of Sonic', maybe focus on the online leaderboards or something. Say, limit it to Sonic Adventure 2 and before.

Pointless ramble about the idea's origins over, here would be my nominations-

Sonic 1- Green Hill Act 1 (GEN)- can't NOT have this one.
Sonic 1- Starlight Act 1 or 2 (GEN)- mainly for the music.
Sonic 1- Jungle Act 2 (SMS)- anybody who's played the MS version knows what a bastard this level is.
Sonic 2- Casino Night 1 (GEN)- almost iconic in its brilliance.
Sonic 2- Metropolis 3 (GEN)- also an absolute bastard.
Sonic 2- Aqua Lake 2 (SMS)- still for me the best 'water' level in any Sonic game.
Sonic 2- Scrambled Egg 2 (SMS)- classic and tough at the same time.
Sonic CD- Stardust Speedway 1 or 2- best level in CD imo.
Sonic 3- IceCap 1 (GEN)- by far the best bgm in any Sonic game, and a fantastic level to boot.
S&K- Leve Reef 1 and 2 (GEN)- both fantastic levels with great twists to them. My favourites out of all 14 zones of S3&K.
Sonic Adventure- Speed Highway- fastest level in the game (obviously I'm talking Sonic only) and imo the most fun.
Sonic Adventure 2- Green Forest- fast. Very fast. And a Sonic stage rather than Shadow's.

Think I've rambled on enough here.