What actors and actresses appeared in Mark Lamarr Leaving the 20th Century - 1999?

It seems you are referring to the "Mark Lamarr's 20th Century", a comedy series that aired in 1999. The information you're asking for is not easily found, since it's more about a concept, not a specific movie or TV show.

Here's what we know:

* "Mark Lamarr's 20th Century" was a series that utilized various actors and actresses.

* The show was known for its humor and historical satire, with actors portraying famous historical figures.

* Unfortunately, there isn't a readily available cast list for the whole series.

To find the actors and actresses, you could:

* Search online: Use keywords like "Mark Lamarr's 20th Century cast," "Mark Lamarr's 20th Century episodes," or "Mark Lamarr's 20th Century actors."

* Check TV archives: See if you can find any episode guides or information on websites like IMDb or TV.com.

* Consult with fans: Seek out online forums or communities dedicated to Mark Lamarr or the show itself.

I hope this helps you find the information you're looking for!