VSO Blu-ray to AVI Converter makes it easy to convert Blu-ray movies to AVI.
You can select which Blu-ray video segment, as well as subtitles, you wish to include in the conversion. The output can be in SD or HD.
VSO Blu-ray to AVI Converter also supports NVIDIA CUDA for accelerated conversion.
If you plan on converting Blu-ray to a lot of different formats and devices, you may want to consider VSO Blu-ray Ultimate Converter, which includes all the features of Blu-ray to AVI Converter, but also all the other Blu-ray converters available at VSO (Blu-ray to PS3, to DVD, to MKV, to AVI, and to Xbox 360).