Rather than threatening to burn the house down or looking like he's ready to throw down, Mel Gibson was in a surprisingly good mood last night when we snapped him leaving Laurel Hardware in West Hollywood.

The 57-year-old actor smiled as he walked up to his car and even said hi to X17 photographers. Remember how we saw him leaving hormone replacement therapy the other day and how we were joking one of the side effects was an improved mood? Maybe it's actually true!

Either way -- it's good to see him smile:

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