Rep. Anthony Weiner, D-N.Y., has offered his full-throated video endorsement for the dirtiest campaigner of 2010 — Rep. Alan Grayson, D-Fla.

Recall that Grayson created and ran the famous “Taliban Dan” ads that deliberately misquoted his opponent, causing the Orlando Sentinel to issue a scathing early endorsement of said opponent which denounced Grayson as “an embarrassment to himself and his district.”