Oil Leak

Where is the Most Common Oil Leak in a 1996 Jetta GLS with automatic transmission, I am leaking oil pretty badly and i am wondering other then from a cracked oil filter or the oil pan seal, where else could oil be leaking from in mass quantities?????
THANKS TO ALL WHO ANSWER

SCott

let me know if you find out i have the same problem see my trend under oil leaks thanks email me @ [email protected]