1)
Truly fantastic song, showcases Justin's amazingly talented vocals. It's a slow song but the slow melody allows JB to show the beauty and elegance in his voice. The video itself is magical and romantic and demonstrates just how much JB cares about his fans.
2)
Justin Bieber ft Jaden Smith. A duet with Jaden to highlight the film "The Karate Kid". Justin sings most of the song with a rap verse towards the end by Jaden. Overall, a song with quite an impressive emotional impact. The video features scenes from the movie with Jaden performing feats of inhuman strength and mind boggling mental fortitude. Justin sings straight from his heart and soul, and serves as Jaden's older brother figure in the song.
3)
This was Justin's first real "mature" song, meaning that he realized that as he and his fans got older, they were looking for more discussion of topics like dating and beng a teenager in his music. In the video, JB serenades with a girl who looks suspiciously like Selena Gomez, and the song itself is catchy, upbeat, and of superior pop quality.
4)
One of Justin's early songs, here he contemplates the age-old adage that "money can't buy happiness". The song is wonderfully visualized and the video is splendidly choreographed. Features an amazing verse from Usher.