Spider-Man
Spider-Man is a nice character to use if you want a fast character, only problem with him would be the fact that you can't do too many combos with him. Just a bunch of the same old combos over and over again, the challenge goes away after a bit. He's got a good speed and a decent attack power, but his defense is low and he can be taken out in about 8 fierce shots. Watch for the recovery time on a lot of his attacks also. If you miss or get an attack blocked, you may be in for some serious pain.
Special Attacks
Web Ball - QCF+P
Web Throw (Straight Ahead) - HCB+WP
Web Throw (45 degrees in front) - HCB+MP
Web Throw (Straight Up) - HCB+FP
Web Swing - QCB+K
Spider Sting - DPM+P
Super Attacks
Maximum Spider - QCF+2P
Crawler Assult - QCF+2K
Ultimate Web Throw - QCB+2P
Combos
D+WK, D+MP, D+FK, QCB+K
This is a nice little 4 hit combo that does 2 hits into a sweep into a hit them while they're down Web Swing. Be sure to use MP not MK or you won't be able to hit them with the sweep.
D+WK, D+MK, QCB+K
This is a shorter variation of the combo above. The crouching MK will send them up in the air a bit for you to hit them with the Web Swing.
D+WK, D+MK, FK, U+WP, WK, MP, MK, QCF+WP, WP, FP
This is a hard combo to do, but it's a good one. It starts out with a hit into the larger launcher. Then you use 4 hits then a weak Web Ball. From there, if you are within range still, you can hit them 3 more times to end the combo.
D+WK, D+FP, QCF+2K, QCB+2P
This is the best combo that Spider-Man will ever have. Due to the Super Cancelling, you can only do it on the Playstation version, but that's still good enough for those who have a Playstation. This one starts with 2 hits into the Crawler Assult. Be sure to pull out the Crawler Assult quicky enough to make it link or the combo becomes blockable. Once the opponent is hit with the last hit of the Crawler Assult, use the Super Cancel and cancel into the Ultimate Web Throw. This combo is better done in the corner, but it does work anywhere on the screen.