This is too funny. Based on a NYT article about all the spoof Brokeback Mountain mashup trailers, here are some of the spoofs on YouTube:

* Brokeback to the Future
* Brokeback Redemption
* Star Wars: The Empire Brokeback
* Brokeback Heat
* Brokeback Top Gun
* Brokeback Hour
* Brokeback Island (LOST)
* Brokeback of the Ring
* Brokeback Shaolin (Shanghai Noon)

Find more here.