Adam Lambert Is a Munster

4/1/2009 1:14 PM PDT BY TMZ STAFF
Here's "American Idol" crooner Adam Lambert on last night's show (left) -- and Eddie Munster from the '60s TV series "The Munsters" (right).

Adam Lambert and Eddie Munster
Only one of them is known for his incessant screeching.

We're just sayin'.