I know it doesn't look like that...

[Encaitare]

Also, in my mind, Wormtongue is a little, white, naked (but lacking genitalia) guy who looks a lot like a wrinkly version of the aliens from Close Encounters (though his eyes aren't quite that big).

As a "rabid Grima fan" (as Imladris has so eloquently put it) I must say... eep. Poor guy.

I also had a "strange picture" of him in my head. Yet mine is quite different. Wormtounge looks like Satan from Passion of the Christ. worms in the nose and all.

Satan was played by a woman, tee hee! Again, poor Grima! It's his tongue that's supposed to be wormy, not his nose..

As for my own strange image... Goldberry is literally golden and somewhat luminous.