One of the many perks of being on 'The Ellen DeGenerous Show' is the element of surprise.

Ellen loves to surprise fans and audience members with gifts and prizes. She also surprises her own staff with presents. However, the more memorable moments are Ellen's pranks.

The celebrities that come to her show are always in for a frightful surprise. They think they're just going to have a normal conversation, promoting whatever it is that they're doing at the time. With Ellen, you can never expect things to be normal.

A note to celebrities who appear on the show, when Ellen starts talking about pranks and fears, watch your back!

With Halloween right around the corner, here are the top 10 moments of celebrities being scared by Ellen.

10. David Spade
Actor David Spade appeared on the show to promote his new sitcom Rules of Engagement. Ellen decides to surprise him with a cake, however that wasn;t the only surprise.

9. Christina Applegate
(Fast Forward to 00:38)
Christina Applegate talks about Dancing with the Stars and gets a surprise.

8. Josh Duhamel
(Fast Forward to 01:40)
Josh Duhamel appeared on the show to promote his movie When In Rome. When he talks about his pranks on other people, Ellen pulls one on him.

7. Halle Berry
Halle Berry appeared on the show, and while there she spoke of her recent engagement and dressing her daughter up for Halloween. She also spoke about a fear of spiders. What about roaches?

6. Dennis Quaid

Ellen talks to Dennis Quaid about his fears. He made the mistake of telling her that he is afraid of rats.

5. Miley Cyrus
(Fast Forward to 00:45)
While on the show to promote her new album, Miley Cyrus gets frightened from a Robin Thicke impersonator. She even gets ready to throw her mug at him.

4. Julia Roberts
(Fast Forward to 03:33)
Julia Roberts appeared on the show to promote her new film Mirror Mirror, and gets a scare from Snow White.

3. Taylor Swift
Taylor Swift goes into the bathroom to take a look at a picture of herself with Ellen, only to fall to the floor from fright.

2. Steve Harvey
When explaining to Ellen why he doesn't like being scared, Steve Harvey had to control his fists after a surprise from Ellen's staff member.

1. Jimmy Kimmel
This probably one of the best Ellen scares of all time. So it may have backfired a little bit, but it didn't take away from the effect.