"What a Catch, Donnie" is Fall Out Boy's second digital download single and third radio single from their fourth studio album Folie à Deux (2008). It was first released as part of the buildup to the new album on iTunes on October 14, 2008 and charted on the US and Canadian singles charts. The track features numerous musicians performing cameo appearances in the song, singing lines from past Fall Out Boy songs. Bassist/lyricist Pete Wentz has said that he wrote the song to remind himself of vocalist/guitarist Patrick Stump. Musically it is one of the band's very few ballads. Fall Out Boy played the song live on Late Night with Jimmy Fallon.

The music video was dedicated to Atlanta rapper Dolla who was shot and killed a few months before the song's release. The band shot the video for the song on July 1, 2009 with Alan Ferguson. On June 30, bassist Pete Wentz posted on his Twitter that the band had 'wrapped up' a video for "What a Catch, Donnie". On July 2, guitarist Joe Trohman stated via Twitter that they had finished shooting the video, editing will take place in the next couple days, and the video was released on MTV on August 6, 2009.

The video includes Spencer Smith and Brendon Urie from Panic! at the Disco. The two also appeared in the official music video for Fall Out Boy's "A Little Less Sixteen Candles, a Little More "Touch Me"" as some of the dandies, and were featured in the video for "Headfirst Slide into Cooperstown on a Bad Bet".

Pete Wentz said in a press statement: - "It is my time to say that we haven't done a video like this before, a video dedicated to someone's death, the death of our best friend and rapper, Dolla (Roderick Anthony Burton II). We hope to shoot the video for 'What a Catch, Donnie' in the same place he was shot and also bring our friends round for the climax."

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