Sonic Adventure Tricks and Quirks
This is a collection of tips and glitches I have uncovered in Sonic Adventure that I think could prove useful or useless to many of you. Take a look if you are interested.

Secret Sonic move: This is kind of an unofficial move but it stills works effectively. To perform a long jump with Sonic hold the B button to start a spin dash and let go. As soon as you let go hit jump, you will be rocketed forward. You can cover about ten times as much distance as Sonic's regular jump with this move. You can also collect emblems that only Tails and Knuckles are supposed to get.

Sonic and the Echidna Temple: You know how only Tails and Knuckles can reach the very top of the Echidna Temple in the Mystic Ruins jungle? Well, I found a way to get there with Sonic. Go to one of the stairways at the base of the temple and charge your spin dash for couple seconds, now let go and you will fly up into the air like you were shot from a cannon. If you can get the aim right you should be able to land on the thin area's peak. It's a nice view from up there.

Extra rings as Big: If you are ever in an adventure field with Big the Cat and want some rings simply cast your line into any nearby water source. If you do this a couple of times you will automatically collect a 1, 5, or 10 ring bonus! This usually only works in Mystic Ruins...I can't seem to get it to work anywhere in Station Square. I assume this is something the programmers of the game left in for their eyes only but now you know.

Upside down Knuckles: If you are gliding in the air as Knuckles you can briefly make him glide upside down by rotating the analog stick rapidly. Totally useless but it's something.

Unlock the Toy Shop: Well, I still don't exactly understand this trick myself but I'll tell you anyway. If for some reason the toy shop in Station Square has a gate in front of it restricting you from entering then there is a way to unlock it. Go to the city hall area as Knuckles and glide over the grassy area on the other side of the brick wall close to the toy shop. If you do this then you should hear a gate lifting type sound and see the gate at the toy shop rise. If you can enter the toy shop with the gate still lifted then it will stay lifted permanently allowing you to enter.

Man statue: You can lift the statue of the man in front of the burger shop in Station Square and carry him around. Do things like place him in traffic, drop him down the sewer, or throw him around. It's good for a laugh.

That's all I have for now...I'll add more as soon as I find it or recall it.