An appropriate animation generation software that I can learn and use to execute this

Hi, does anyone know of any animation software that I can use to quickly generate the effects such as in

http://www.youtube.com/watch?v=mmqSid_C190

(0.01 to 0.26)

and

http://www.youtube.com/watch?v=M74E-78uo0s

(0.01-0.03)

?