You’re pretty much guaranteed of a white Christmas in Sun Valley, Idaho, so Bing packs up the family for a holiday road trip with guests Michael Landon, Connie Stevens and John Byner. Landon croons John Denver’s “Season Suite: Winter,” harkening back to his brief career as pop singer in the early 1960s. Stevens sings Harry Nilsson’s “Remember (Christmas).” And comedian and impressionist Byner does a killer Crosby impression (among others). Landon even parodies his Western persona in “The Ballad of The Christmas Star.” (He had completed his 14-season run on Bonanza earlier in the year.) The show concludes with a medley of Christmas carols ending with…guess what?