Biden's gay marriage readiness ticks up to SITCOM 2.

SITCOM 1:  "That gay couple on Modern Family is hilarious."
SITCOM 2:  "I'm totally comfortable with saying I'm totally comfortable with gay marriage."
SITCOM 3: "Ellen's highlights are really nice."
SITCOM 4:  "I totally need a gay BFF.  I wonder if Harvey Fierstein is available."
SITCOM 5:  "Gay marriage should be legalized. Launch legislation now."

Pre-SITCOM level:  "Evolving." 

http://thecaucus.blogs.nytimes.com/2012/05/06/biden-comfortable-with-gay-marriage/?hp