Can I export the waveform data to other applications?
You can copy a plot as bitmap by pressing ⌘Cmd + ⇧Shift + 4, then the spacebar and then clicking the camera icon on the waveform window. The bitmap will be saved as a .png on your desktop.
OK, that works for bitmaps, but can I get the data itself to an application like Excel?
There is an export utility(Waveform Menu: File=>Export) that allows data to be exported to an ASCII file. There is also a 3rd party free utility written by Helmut Sennewald. It is available from the independent users' group http://groups.yahoo.com/group/LTspice. This utility allows various forms of manipulation of the data including the ability to merge waveforms from different simulation runs.
Who is Helmut Sennewald?
The guy on the right:
