The first two clips from director Barry Sonnefeld’s Men in Black 3 have gone online.  Both clips are heavy on the action and light on the dialogue, but one of them gives us a look at those strange single-wheel vehicles in motion.  When we first caught a glimpse of the vehicle, I was instantly reminded of this South Park episode.  Now that we’ve seen them in action, well, they still look like that God-forsaken machine.  The other clip highlights a short conversation between Will Smith and Tommy Lee Jones before they get to blastin' aliens.  Nevertheless, I’m mainly excited about three things for Men in Black 3: Josh Brolin’s spot-on Tommy Lee Jones impression, Rick Baker’s incredible alien make-up, and Bill Hader.  If you missed them, be sure to check out over 40 images from the film that include some fantastic looks at Baker’s aliens, as well as Steve's wide-ranging interview with Sonnenfeld.Hit the jump to watch the clips.  The film also stars Jermaine Clement, Alice Eve, and Emma Thompson and opens in 3D on May 25th. [Update: A third clip has gone online and is now included after the jump.]Click over to Yahoo! to watch in HD.Here’s the synopsis for Men in Black 3:

In Men in Black 3, Agents J (Will Smith) and K (Tommy Lee Jones) are back… in time. J has seen some inexplicable things in his 15 years with the Men in Black, but nothing, not even aliens, perplexes him as much as his wry, reticent partner. But when K’s life and the fate of the planet are put at stake, Agent J will have to travel back in time to put things right. J discovers that there are secrets to the universe that K never told him — secrets that will reveal themselves as he teams up with the young Agent K (Josh Brolin) to save his partner, the agency, and the future of humankind.