Katie Holes will help How I Met Your Mother celebrate Halloween this Monday.

In a highly-anticipated guest-starring stint, Mrs. Tom Cruise will make a major impression on "Perfect on Paper," as she spends time with Ted at another rooftop party, once again decked out in her best pumpkin regalia.

Ted will be a hanging chad, Robin will be a hockey player and Barney will be a topless American who gets grief for, you know, being Canadian. Watch the quartet interact in the following clip and then read our staff's take on the latest episode in this edition of the HIMYM Round Table.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.