AT&T's acquisition of Time Warner led the way as the biggest deal of 2016. The implications of the deals that did -- and didn't -- get announced this year set up 2017 as a year of uncertainty for mergers and acquisitions. That's usually a bad sign for deal volume, as chief executive officers like certainty when deciding to spend billions. Still, equity markets are booming, and there's a lot of optimism for a very big 2017 among M&A bankers and lawyers. Bloomberg M&A Executive Editor Jeff McCracken, M&A Managing Editor Aaron Kirchfeld and host Alex Sherman run down the biggest and most influential deals of 2016 and what the domino effects could be in 2017.