This was not exactly the case with me(since I did not dent my pan )but if you do...it's the first thing you should check!(since it's very close to the pan!)
I thought it was the oil pump!
My case(curse) was a fluke! since the weld on this thing broke...how? I dunno!

Here is the link to my mishap:NASIOC Forums - The real reason why my engine failed!
Address:http://forums.nasioc.com/forums/showthread.php?s=&threadid=304976:)