Look at NXP Semiconductors run! This stock was up 17 percent on Monday on news that it will acquire Freescale Semiconductor. Jim Cramer thinks this stock behavior is strange: Normally it's the target of the takeover that soars, not the acquirer!

Then again, this isn't a plain vanilla acquisition that hit the market. This one could breed a powerhouse, so it only makes sense that stocks wouldn't act like any old normal acquisition.