The Bad Mother's Handbook, a made for TV movie, Rob made in the UK in 2007 will be released on DVD in the US Aug 27th! Rob plays the sweet but adorkable character 'Daniel Gale'. People Magazine just posted the US Trailer for The Bad Mother's Handbook, click here to watch it. The movie is based on the book with the same title by Kate Long. It also stars Catherine Tate & Holly Grainger.
Here's a video with clips from the movie I found on Youtube: