Note: I'm re-posting my mod here so that Theo can delete the old entry.
Replaces the male player model with a bare-chested version. Includes all of the dye colors.
Download it
here or
here.
To uninstall it use
this.
To install it, just extract the files to your Titan Quest folder. If you installed it to C:\Program Files\THQ\Titan Quest\ just run the toplessmale.bat file. If you have it installed in a different folder/drive, you will either have to manually install it with the archivetool, or edit the .bat file using notepad to point to your install folder and then run it.