I recently watched Don't trust the b in apartment 23 on Netflix. One of the main characters is James Van Der Beek, playing himself. He beautifully walks the line between being painfully arrogant and aloof, while also desperately vain, petty and scared of being forgotten.
If you were a teen in the 90's, it's well worth a watch.
Might give it a go. Celebrity or not, we are all humans with the same shortcomings at the core.