David Cook makes his mom's night on 'American Idol'

David Cook is back on "American Idol," singing "Last Goodbye." One of my favorite contestants ever; creative, consistent and a great personality, on top of a strong voice.

Although every time I see him I remember those photos of him and David Archuleta goofing around after their season was over.

Crowd's super-into it. I hope Stefano's taking notes. This is how you appeal to the ladies while keeping your credibility.

Really cute. His mom's in the audience and excited to meet Steven Tyler. David encourages her to go over to him and he gives her a big hug.