Suggestions by @lukejamesbennett
103,661 suggestions
Vincent Price
as Squidward Tentacles in Spongebob Squarepants (1960's)

Janet Leigh
as Sandy Cheeks in Spongebob Squarepants (1960's)
Marilyn Monroe
as Sandy Cheeks in Spongebob Squarepants (1960's)

Tony Curtis
as SpongeBob SquarePants in Spongebob Squarepants (1960's)
Rock Hudson
as Patrick Star in Spongebob Squarepants (1960's)

Janet Leigh
as Sandy in Spongebob Squarepants (1950's)
Rock Hudson
as Patrick in Spongebob Squarepants (1950's)
Vincent Price
as Squidward in Spongebob Squarepants (1950's)

Tony Curtis
as Spongebob in Spongebob Squarepants (1950's)

Cary Grant
as Patrick Star (1940s) in SpongeBob SquarePants (1929-1969 Paramount Pictures Cartoon Theatrical Shorts)

Cary Grant
as Patrick Star (1930s) in SpongeBob SquarePants (1929-1969 Paramount Pictures Cartoon Theatrical Shorts)
Margaret Sullavan
as Sandy Cheeks (1930s) in SpongeBob SquarePants (1929-1969 Paramount Pictures Cartoon Theatrical Shorts)
James Stewart
as SpongeBob SquarePants (1930s) in SpongeBob SquarePants (1929-1969 Paramount Pictures Cartoon Theatrical Shorts)
Vincent Price
as Squidward Tentacles (1950s) in SpongeBob SquarePants (1929-1969 Paramount Pictures Cartoon Theatrical Shorts)
Vincent Price
as Squidward Tentacles (1960s) in SpongeBob SquarePants (1929-1969 Paramount Pictures Cartoon Theatrical Shorts)
James Stewart
as SpongeBob SquarePants (1940s) in SpongeBob SquarePants (1929-1969 Paramount Pictures Cartoon Theatrical Shorts)

Tony Curtis
as SpongeBob SquarePants (1950s) in SpongeBob SquarePants (1929-1969 Paramount Pictures Cartoon Theatrical Shorts)
Rock Hudson
as Patrick Star (1960s) in SpongeBob SquarePants (1929-1969 Paramount Pictures Cartoon Theatrical Shorts)
Rock Hudson
as Patrick Star (1950s) in SpongeBob SquarePants (1929-1969 Paramount Pictures Cartoon Theatrical Shorts)

Tony Curtis
as SpongeBob SquarePants (1960s) in SpongeBob SquarePants (1929-1969 Paramount Pictures Cartoon Theatrical Shorts)