Who is an actor that sort of looks like Leslie Nielsen and has blue eyes a round face constant smirk?

You're describing a very specific look! It's difficult to pinpoint one actor who perfectly matches that combination of features. However, here are a few actors who share some of those characteristics and might fit the bill:

* John Cleese: While not as round-faced as Leslie Nielsen, Cleese has a similar mischievous twinkle in his eye and a dry wit that often manifests in a slight smirk.

* Martin Short: Short has a more pronounced round face and a wider smile than Nielsen, but he also possesses a similar comedic energy and penchant for deadpan delivery.

* Stephen Fry: Fry has blue eyes and a sly smirk, though he's a bit more slender than Nielsen. His comedic timing and sharp wit are reminiscent of Nielsen's.

It's also possible that you're thinking of an actor from a specific time period or genre. Do you have any other details that might help narrow it down?