Who is a copy cat??

We have been used to seeing bollywood movies are copies of holywood movies and bollywood songs are lifted from some popular western songs. However, not so long ego, I noticed one popular number by JLo is a copy of yester years bollywood number "Sochna kya jo bhi hoga dekha jayega". The you tobe video is here:

http://www.youtube.com/watch?v=91YtNfGRO-0

Here is : JLo On the floor song:

http://www.youtube.com/watch?v=t4H_Zoh7G5A

And check this song by Shakira:

http://www.youtube.com/watch?v=arW3xLkanh4