This weekend alone, he has been:
a rollerskating robot (without rollerskates, mind you)
a baby
a baby animal
a baby hippo
a monkey
a racecar driver (specifically, Hot Wheels Acceleracers)
a racing drone (from the above show) "Daddy, I a drone!"
Superman (thanks to his new pajamas)
I'm going to see if he and his brother want to be fish or frogs in a few minutes... they opened the pool at the apartment yesterday.
edit:
1259 Central Time 21MAY06 - baby giraffe