So, we're going into the second round of X Factor live shows this weekend, and we're still not entirely sure who we should be backing - although it's probably Misha Bryan.

This week in our roundup of YouTube videos we take a look at some of the best X Factor performances ever. Have we missed out your favourite? Comment below and let us know.

There's not been anyone to rival Leona Lewis on the X Factor yet

We love JLS - but what was up with Marvin's hair?

Remember Ben Mills? Well, you will after watching this.

We, personally, think that Diana Vickers bore the brunt of a lot of horrible bullying. Yes, the claw was annoying - but from watching this video, and this is only the first live show, she was actually really good.

Ummm, how did this woman not win the X Factor?

Cher Lloyd gaves us chills when she sung Shakespeare's Sister's Stay.

Decide who you want to win from the rest of the X Factor contestants:
The X Factor over 25s - Louis Walsh
The X Factor groups - Tulisa Contostavlos
The X Factor boys - Gary Barlow
The X Factor girls -Kelly Rowland

Remind yourself of past X Factor performances