In its original American broadcast, "Christmas Special" was watched by 8.9 million households, according to the
Nielsen ratings system, and became the show's highest-rated episode so far. It received a 3.8 rating/9 share among viewers in the 18–49 demographic, meaning that 3.8% of all people in that group, and 9% of all people from that group watching television at the time, watched the episode. The season premiere episode, "
Do-Over", was up until that point the highest-rated episode of the show, with 8.7 million viewers. but lost it to Tina Fey for her satirical portrayal of
Sarah Palin on
Saturday Night Live. Critical reception of the episode was not entirely favorable. Television columnist Alan Sepinwall for
The Star-Ledger commented that he had not really liked any of Elaine Stritch's appearances as Jack's mother on the series, writing that "Jack's fear and loathing of his mother just feels claustrophobic and uncomfortable instead of funny, and I'm as eager to see the end of her visits as [Jack] usually is." Sepinwall said that "very little" of "Christmas Special" worked. "I want to be in the holiday spirit, but this is two Christmas duds in a row from
30 Rock, and we can't even blame the looming writers strike this time around."
IGN contributor Robert Canning believed the show could have delivered a Christmas episode, but noted that their attempt at it "was a little less than satisfying. The ideas were there, but the rhythm of the episode was off." Nonetheless, Canning said the episode was not terrible. He enjoyed all the plots except for Liz's, writing that it did not quite fit, and that "the overall result of Liz's plot just wasn't all that funny." In conclusion, Canning gave the episode a 7.8 out of 10 rating. Jeremy Medina for
Paste found that there was nothing "special" about this episode. In his opinion, Liz should be featured in "new and exciting plot line[s]" rather than helping Jack endure his troubles with his mother. Not all reviews were negative;
Bob Sassone of
AOL's
TV Squad wrote: "I'm a sucker for Christmas episodes." He was complimentary towards Stritch's role as Jack's mother, citing that she has been "demanding and a little difficult, but she also makes you really feel for her." ==References==