iSkysoft is now offering its DVD to iPhone Converter for free through Aug. 9. It's normally US$29. It's worth the 30 bucks -- and it's a must-have for free.
 
You can get more info at http://www.iskysoft.com/software-giveaway.html or contact iSkysoft  on Facebook (http://www.facebook.com/iskysoft) to get a keycode for the free version.

DVD to iPhone Converter lets you enjoy DVD movies on your Apple smartphone. It provides optimized presets for iPhone 3G, iPhone 3GS, and iPhone 4. It supports converting DVDs to a variety of formats such as MP4, AVI, MKV, FLV, etc.

With DVD to iPhone Converter, you can copy your DVD movies, concert DVD and music DVDs to play on the iPhone. It not only supports DVD to MPEG4/MP4 conversion, but also supports ripping DVD to H.264, which has smaller size and higher quality. Besides DVD to video conversion, the program can also rip audio portion from DVDs and save as MP3s that are playable on the Apple smartphone.

You can convert a whole DVD to one big iPhone video file. You can rip one, or several, chapters. You can extract video clips. And, according to the folks at iSkysoft, DVD to iPhone Converter offers encoding speed that's five times faster than real time due to the optimization the software offers (based, of course, on your CPU type and operating system).