I forgot one more record:

Big Daddy Barrick Burger
48 minutes, 10 seconds
Sonya Thomas

From this event's press release:

"Thomas has often been compared to a combination of Anna Kournikova and a ravenous jackal loose on the Serengeti."

9 pounds
Bun 12 inches in diameter
A half head of lettuce
2 tomatoes
2 onions
4 pickles
Mayonnaise
Mustard
12 slices of American cheese
$49.99

If a person finishes the burger within 24 hours, it's free of charge.