I can't find these two rap/reggae songs... help me please. :)

Hi again!! I was a watching this TV serie called The L.A Complex and there's three songs I loved and I'd like to know the names, I tried with google but had no luck.

Right at 5.41 a rap song starts, I like that one... (I tried with the lyrics in google but nothing came out..)
And at 6.19 another one starts (mixed with reggae I guess...) I liked that one too...
At 10.27 there's another great one!! (My fav out of the three) lol never happened to me before, 3 songs I like in 1 video...

Here:
http://www.youtube.com/watch?v=vaK9pRW4G2w

Thank you in advance!

5.41 Peter Jackson - Certified (feat. Naughty By Nature)

That's it!! Thank you!!

I just got the last one!! it's Soul Khan - Speeding Bullets (quite a nice song)

Now.. I'm just missing the one playing at 6.19.