Can I export the waveform data to other applications?
You can copy a plot as bitmap by making a waveform window the active window and typing Ctrl-C. Then, in an application that accepts bitmap pastes from the clipboard like Word or Paint, type Ctrl-V. Note that this also works for bitmaps of schematics. These images can also be exported as Windows metafiles(Menu command Tools=>Write to a .wmf file) which writes the image as vector graphics to a .wmf file that can be imported in various desktop publishing tools. When exporting a metafile of waveform data, you first go to Tools=>Control Panel=>Waveform=>Font and select Arial. The default, System, is highly legible on a CRT, but is a fixed font that does not scale correctly in metafiles.
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 ACSII 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: