The Internet says it, so it must be true.

From here:
**** THE PROOF THAT Jenny IS EVIL ****

   J   E   N   N   Y
  74  69  78  78  89     - as ASCII values
   2   6   6   6   8     - digits added
  \_/ \_/ \_/ \_/ \_/
   2   6   6   6   8     - digits added

Thus, "Jenny" is 26668.


Add 1778, the year Oliver Pollock invented '$', the symbol of exploitation, suffering and injustice - the result is 28446.

Turn the number backwards, divide by 11 - the symbol of judgment and disorder. The number is now 5862.

Add 7291 to it - this is the year Fidel Castro was born, written backwards - you will get 13153.

Subtract 1792, the year guillotine was first used. The result will be 11361.

Subtract 7691 from the number - this is the year Che Guevara was executed in Bolivia, written backwards. It gives 3670.

This number, read as octal, gives 1976 - the year George Harrison performed the lumberjack song with Monty Python - if you have seen it, you should understand.

This is truly evil. QED.