As a performance artist, Brennan has been in folk's shows at BAM, Abrons Arts Center, Joe's Pub, and New York Theater Workshop. He has performed solo shows at The Wild Project, The PIT, Dixon Place, Foley Gallery, and D Lounge. He has been in multiple friends' video projects, some TV shows, and is an associate artist with New York Live Arts.
I Don't Want to Live Here Anymore (at Foley Gallery)
Brownstone (from The Artist is Not Present)
Fashion Gal (at Funkadelic)
Bryan's State of the Union
Delilah (from The Artist is Not Present)
Bad Skin (Dixon Place)