Paul Reiser, fresh off having the plug pulled on his new NBC sitcom, kept a date with Jay Leno that was set up originally to promote “The Paul Reiser Show,” and used the opportunity to rip NBC for what he apparently thought was a bad decision.

Reiser’s appearance on Monday’s “Tonight Show” put him alongside Christina Aguilera, who is promoting her new NBC show, “The Voice”–making for some mildly awkward moments.

Reiser’s show, which aired on Thursday nights opposite Fox powerhouse “American Idol,” got feeble ratings and was yanked by the network after only two episodes were televised. Reiser was once a mainstay of NBC’s Thursday night “Must-See TV” comedy lineup as a creator and star of “Mad About You.”

Here’s a clip of Reiser’s “Tonight Show” appearance: