I don't know all of the details (and have DirecTV, not Dish), but you won't get the MLB, NBA, NHL, college football and possibly hoops from the Fox regional channels - they're ppv and thus blacked-out. Some days it seems like the whole thing is blacked-out.
I don't even bother with the regional channels - I just got the DirecTV sports pack for FSW. Heck, just about the only stations I watch out of my 130+ are FSW and the History Channel.