You're all missing an important difference:
Code:
mikeage@linode ~$ aptitude -h | tail -n 1
This aptitude does not have Super Cow Powers.
mikeage@linode ~$ apt-get -h | tail -n 1
This APT has Super Cow Powers.
and as a result
Code:
mikeage@linode ~$ aptitude moo
There are no Easter Eggs in this program.
mikeage@linode ~$ apt-get moo
(__)
(oo)
/------\/
/ | ||
* /\---/\
~~ ~~
...."Have you mooed today?"...
Although, to be fair
Code:
mikeage@linode ~$ aptitude -v moo
There really are no Easter Eggs in this program.
mikeage@linode ~$ aptitude -vv moo
Didn't I already tell you that there are no Easter Eggs in this program?
mikeage@linode ~$ aptitude -vvv moo
Stop it!
mikeage@linode ~$ aptitude -vvvv moo
Okay, okay, if I give you an Easter Egg, will you go away?
mikeage@linode ~$ aptitude -vvvvv moo
All right, you win.
/----\
-------/ \
/ \
/ |
-----------------/ --------\
----------------------------------------------
mikeage@linode ~$ aptitude -vvvvvv moo
What is it? It's an elephant being eaten by a snake, of course.