I'm often given a number of folders, each of which contains an image sequence (usually TIFF or DPX) representing a single clip. Usually the project starts by painstakingly importing the several dozen sequences by hand.
Is there any way to import all the sequences at once?
You could also try this...
Put all of the sequences in one folder.
Then import the sequences into AE.
When you go to import, open the folder containing the sequences and select all the files, or at least one file from each sequence. (for me its easier to just hit "Ctrl + a" to select all of them)
Make sure to put a check next to the "Multiple Sequences" option and you're done!
After Effects will sort them all out for you(assuming each sequence has a unique base name)