The interface of the program comes with an embedded browser that lets you browse normally... with the difference that it will automatically recognize any video susceptible to be downloaded and will offer you the possibility to do so.
Additionally, from the download tab you can manage all the videos you have in the queue: play them, change their priority or delete them. Unfortunately, the format conversion tab is only available in the PRO version.
Foxreal YouTube FLV Downloader is a good tool to download videos from the Internet. Its only problem is that it can become tiresome.