Shocks??

When I go over potholes, the back of my passenger side car makes a weird noise--kinda like a popping noise. I'm thinking that it's my shocks that have gone bad. What do you guys think? And how much would it be to replace it? Is it hard?

Mine does the exact same thing...both actually.. does any1 know if the back wheels are supposed to have a til?...cuz i can take a 2 ft. level an both my front rims and they are perfectly level.. an both of my rear wheels.. .the top goes in half an inch.. i hope that popping doesnt mean there bad :( . if they are imma just lower my car.. that way i can scrape my front bumper off....

Uh.....anyone else? ;o/