David Letterman has decided to weigh in on the iPhone 4 antenna problem through a top 10 list. This is the top 10 signs you’ve purchased a bad iPhone. Check out the video below (after the jump):

David Letterman, known for his top 10 lists, decided to focus on “Excuses Of The Guy Who Lost The iPhone Prototype” last night. Although I must admit, this seems like a low blow to Gray Powell.

Spoiler: Below is the actual list in text format:
10. Couldn’t call apple for help because I lost my iPhone
9. I’m more of a Kindle guy
8. You mean besides being drunk out of my mind?
7. Distraught Kate Gosselin kicked off ‘Dancing with the Stars
6. Thought there was an App that would whisk it back to my house
5. It must have fallen out of my iPants
4. Volcanic Ash! Run!
3. Let’s Just Blame Goldman Sachs
2. At least I didn’t lose my finger like that iPad guy
1. It didn’t work anyway — it uses AT&T

Actor Kevin Spacey (@KevinSpacey) was on the Late Show with David Letterman last night and he gave a tutorial on Twitter.

Spacey boasted how many followers he had and said that Letterman does not even get that many people watching his show. Spacey wrote a tweet from the show (screenshot below) saying hi to his followers from the show. Letterman said that if he wanted a few thousand people to say hi to him back he could just go on 53rd and Broadway and wave.

By the conclusion of the Spacey interview, Letterman said that Twitter reminded him of “a waste of time!” Check out the video above, it is worth watching.

Last night Superbad and Accepted star Jonah Hill was on David Letterman talking about his Twitter impersonator. “I have never been on the website Twitter nor will I ever be on the website Twitter,” said Hill on the show. “Apparently this kid has been talking trash to Jon Favreau.” Favreau is one of the stars in The Break-Up and Iron Man.

Twitter has been able to verify some celebrity accounts, but Jonah Hill definitely got shafted here.  Regardless the interview is hilarious.  Hill even called Favreau personally to apologize for what the fake account is saying to him.

Joaquin Phoenix, a famous actor whose most notable role was as Johnny Cash from the movie Walk The Line.  Recently David Letterman had Joaquin appear on his show.  Joaquin showed up with sunglasses on and a giant beard.  Joaquin then proceeded to talk about how he wants to get into making an album and rapping.  The audience was loving it.

Joaquin mumbled quite a bit to himself and kept questioning whether Letterman’s witty remarks were necessary.  Letterman’s witty remarks were provoked by Joaquin’s lack of response when being asked about questions regarding his new movie.  The whole ordeal was quite awkward, but the YouTube audience loved it.

Within 36 hours of the below clip being added to YouTube, it received over 2.5 million views.