"Download images" right click context menu.

[The T]

Add an option to be able to select a group of games, right click, and choose “Download images” to download images for those games, without having to scan every single game or risk downloading images on games you don’t want to be altered.

[Christian]

Can select the games you want to grab media for and then go to Tools > Download Metadata and Media and it will only grab media for the titles selected.