I use Acobat Profesional is a best adn the fast also you can manage the resulution and different jpg. tif, png
In Abbyy Finereader you can select your desired pages (Hold down ctrl and click the desired pages in the panel on the left. Or hold shift and click the first page you want and then the last page and it will auto select all pages in between the two.) You can then "save selection as" and save as JPG.
I use Adobe Acrobat X but if someone don't want to buy a software, then you could simply take a screenshot of the displayed PDF.
I would suggest you Photoshop or even Illustrator.
Photoshop may be the best option, especially if the pdf has layers.
Photoshop or Illustrator work fine, but if you have a lot of these to make (and you are on OSX) use automator. There is a workflow action for rasterizing PDF files... I have an action set that takes all PDF files placed in a directory and rasterizes, renames and reserves them. You just click the components together.
Photoshop is more good for export to jpg
I generally use photoshop because its better to control the trim/bleed area etc, but it is a bit slower sometimes depending on the file - I do have an action droplet for it too actually
I've used the preview method, somewhat ok
Not a huge fan using acrobat cause I find it very buggy
I usually go with PDF2JPG on my Mac. An automater script. You can set the DPI and then it converts all the pages to JPG documents. It's really fast.