The Boston Blazers, an indoor-lacrosse team, held a half-time show that is reminiscent of Janet Jackson's performance. I'll let the video speak for itself, along with the announcer on the field. Don't forget to hear the "Boing" sound effect.
The National Lacrosse League is incredibly popular in certain markets. Toronto Rock attendance has wanted recently but they routinely sold out (or have come close to) selling out the ACC.
Box lacrosse replaces hockey in our neighbourhood ("friends don't let friends play soccer") for kids as the sport of choice in the spring and summer. Baseball is not even on the radar any more.