Googler, JohnMu, like last year, came in and responded to at least one thread, likely more. In a Google Webmaster Help thread John tried to help a webmaster deal with temporary down time. He gave the following advice:
Instead of returning a default website when an error occurs, it's much better to let us know that it's a temporary issue (result code 503). That way, we'll know not to look at the content and to try again later.
In addition, Matt Cutts also joined in on a Merry Xmas thread, late last night saying, "luzie, thanks for the welcome. :)"
There were plenty of other Googlers, and likely other search reps at other companies working or participating in company events, on Christmas. I just wanted to document a few.