Here's a quick file of some creepy-ass effects I did today while having fun auditioning. This can be easily done in Adobe Audition by taking the following steps
1. Record the line or word
2. Reverse it
3. Add whatever echo or reverb you want (leave super ample head and foot room when you highlight the part though)
4. Reverse it back again
Follow those 4 easy steps and this is what you get:
Scary right?! You're welcome.