Why is this funny? if so.

Here there are some sketches that i like you to watch and tell me why they are funny and above all if they would be funny in other languages as well.

1) ¿Que Hora Es?
http://www.youtube.com/watch?v=EfObUzkjZB8
Translation copied:
M1 = what time is it
W1 = eight
M1 = where is the library
W = I do not know, I do not know
M1 = Monday
W1 = Tuesday
M1 = Wednesday
W1 = Thursday
M1 = Merry Christmas
M2 = what time is it
W1 = TELEMUNDO
M2 = my name is derec, two coca colas please
M1 = one beer for me
M2 = Hey macarena
W1 = gentlemen, there are many tacos in mexico
M3 = number 1
W1 = the crazy chicken is very delicious
M3 = 2, 3, 4, 5
W1 = 6
M4 = no longer have to search for your love, becouse I will always be beside you, I am a part of you and never LEFT you, without you I do not want to live more
M3 = how do you say 'chilll' in Spanish?
M1 = it's cold, it's cold
M3 = cold bread, what time is it
W1 = I think it is 'como se llama
M2 = May 5 baby
M4 = hey, you do not speak Spanish
everybody= yes, yes yes
M4 = what time is it

2) Que Hora Es? ep. 2
http://www.youtube.com/watch?v=I-Huylg-TXs&NR=13

3) One Semester of Spanish - Love Song
http://www.youtube.com/watch?v=ngRq82c8Baw&feature=fvw

4) Spanish for your Nanny
http://www.youtube.com/watch?v=5fda4_wo6JI