How to caulk around a shower - my SO and I used this as a guide for caulking our bathroom floor.
Suggested order for painting a house - A discussion board thread with a recommendation for the order of painting a house (and any room in it; we used this to guide our painting in the bathroom)
Installing interior moldings - While we have a detailed book on this topic (Finish Carpentry by Gary Katz), it was nice to have another illustrated source.
How To Install Baseboard Molding, Even On Crooked Walls - Tips to resolve a few common molding installation problems.
The Finish Carpenter's Manual by Jim Tolpin - A book with sample pages available via Google Books, one of which (page 104) just happened to succinctly summarize how to scribe baseboard molding. Based on the preview, this looks like a great book on finish carpentry.
Casing Problems - Drywall Not Flush With Jamb - Not that we're saying that this happened in our house (after all, our remodeling has gone so smoothly!1), but this is an illustrated example of how we would have dealt with drywall that ended up being proud of the door jamb if it had occurred.
This Old House video on installing crown molding - The text on the page is a bit more useful than the video, though it was nice to see someone actually installing it (rather than just reading about it)
1 And if you believe that, just go read some of the posts linked to here; then you can come and tell me if I'm being sarcastic or not.