Whether you're mentally ready for it or not, Gus Johnson is already in March Madness mode and offering up his over-the-top reactions to games in the Big 10 Tournament. Last night, Michigan State's Keith Appling threw it down on Melsahn Basabe of Iowa and what followed was a signature Gus-gasm. 

WHAT!    

RELATED: Gus Johnson's 25 Most Over-the-Top Calls

[via YouTube]