Grill-ty as charred!
Thought of this one on my own while playing WoW a couple days ago and I'm pretty sure it hasn't been told before. I like corny jokes. I Googled it and didn't find anything (:
Lighting a candle* Doctor: When we find you a new liver.
Because the hamburger is in the ground state.
Because they are judged by a jury of their piers.