Billy Batson transforms into Captain Marvel by shouting "Shazam!" which grants him:
the wisdom of Solomon
the strength of Hercules
the stamina of Atlas
the power of Zeus
the courage of Achilles
and the speed of Mercury.

For this guy, though, the letters in "Shazam!" stand for:
the wisdom of Jessica Simpson
The jawline of Phillip Seymour Hoffman
The Fatty of Arbuckle
The charisma of Zamfir
the hairline of Jason Alexander
and (oddly) the dance moves of Menudo.