[users] "Find and Replace" for adjacent cells...and a regular expresison question

[David Rudel]

Hey guys, how can I use "Find and Replace" to find instances of two adjacent 
cells having identical content?
 In particular, I am trying to figure out how to use regular expression to 
take a sorted list and delete identical entries:
 So
 A
A
A
B
C
CC
D
D
EEE
F
F
 Would become
A
B
C
CC
D
EEE
F
  Any help would be appreciated.