Chad Finn covers the Boston Sports Media for the Boston Globe. Twitter: @GlobeChadFinn   1:50 Why do the Celtics love getting behind big in games?   9:10 Are these big comebacks a red flag for a bigger issue?    14:00 What's your favorite thing about Jayson Tatum?   30:00 Does this Celtics team remind you of the 80's Celtics?    Available for download on iTunes and Stitcher on Sunday, January 14. Celtics Beat is powered by Casper and eHarmony. Learn more about your ad choices. Visit megaphone.fm/adchoices