The hits category is something of a dubious one. Not only is what constitutes a hit highly subjective from arena to arena, but the league has only been keeping track of the statistic for less than a decade. Back in 2002-03, the Florida Panthers' Ivan Majesky, that destroyer of men, won the first hitting title with 147 collisions.
Then, perhaps feeling that any category that Ivan Majesky can win is a useless category, the NHL didn't even track hits the following year.
Post-lockout, however, the league became a little more dedicated and liberal in counting collisions. In 2008-09, Cal Clutterbuck set the single-season record in the category, registering 356 in his rookie campaign with the Minnesota Wild. There wasn't much fanfare, especially since the Wild's stat counters are known to be a little overeager.
But let's ignore that the record is based on wild subjectivity (pun) and that it's only three years old. It's a record, dammit, and it's in jeopardy of being broken by someone.