Windows XP Media Center Edition also creates ehthumbs.db which holds previews of video files.

hugocf · hugocf · commit 0be0dd05f741 · 2012-07-17T01:17:08.000+02:00
See http://en.wikipedia.org/wiki/Windows_thumbnail_cache#Thumbs.db
diff --git a/Global/Windows.gitignore b/Global/Windows.gitignore
@@ -1,5 +1,6 @@
 # Windows image file caches
 Thumbs.db 
+ehthumbs.db
 
 # Folder config file
 Desktop.ini
