Can you believe Justin Bieber is already 19? It seems like just yesterday we were watching the 15-year-old cutie pie dancing around a bowling alley for his 'Baby' video.

Bieber has come a long way since his 'Baby' and 'One Time' years, releasing tons of music videos that have grown in maturity along with the singer himself. Now the question is, Beliebers: If you had to pick one Justin Bieber music video to watch on infinite loop, which one would you choose?

In some of his earlier music videos -- 'One Time,' 'One Less Lonely Girl,' 'Baby' (featuring Ludacris), 'Eenie Meenie' (with Sean Kingston), 'Never Let You Go' and 'U Smile' -- we get to see a young Bieber trying to woo females of his fancy in a variety of scenes. For example, in 'One Less Lonely Girl,' we see the tireless Bieber on a hunt to get his girl, and we watch him dance his way right into Jasmine V's heart in his record-breaking 'Baby' clip. Of course, none of Bieber's video girls can resist the adorable singer's charm.

Later, Bieber switched up his formula more. We got to get up close with him in the studio and on tour during 'Never Say Never' (featuring Jaden Smith) and 'Love Me.' Bieber also displayed his superior dance skills alongside Usher in 'Somebody to Love,' crooned with country trio Rascal Flatts in 'That Should Be Me,' and addressed heavy world issues like natural disasters and war in 'Pray.'

In late 2011, Bieber unleashed his holiday spirit in a big way with a series of Christmas-themed music videos, including his duet with Mariah Carey on 'All I Want for Christmas Is You,' 'Fa La La' with Boyz II Men, 'Santa Claus Is Coming to Town,' as well as his own original X-Mas ditty, 'Mistletoe.'

Finally, Bieber's most recent batch of 'Believe' videos have been some of his most entertaining yet. When he first premiered his clip for 'Boyfriend,' girls couldn't help swoon as Bieber drove around in one of the hottest cars ever looking like the hottest guy ever. 'As Long as You Love Me' found Bieber taking a more cinematic approach, as he told an in-depth  'Romeo and Juliet'-esque tale about the girl he loves and her evil dad (played by Michael Madsen) who wants to keep them apart. His most recent music video is 'Beauty and a Beat,' featuring Nicki Minaj, where Bieber films as he and his pals take over a water park.

Which Justin Bieber music video stands out in your mind the most? Click through the links provided to re-watch all of his clips, and vote for your favorite below!