Did you know that Alyx always wears a piece of jewelry that once belonged to her late mother? The current Featured Article on the Combine OverWiki covers the wife of Eli and mother of Alyx, Azian Vance:
https://combineoverwiki.net/wiki/Azian_Vance

Did you know that, in Half-Life 2: Episode Two, Gordon was once going to meet the owners and original builders of the Muscle Car? This month's Featured Article on the Combine OverWiki highlights the Abbott and Costello-like Rebel duo, Griggs and Sheckley:
https://combineoverwiki.net/wiki/Griggs_and_Sheckley

Did you know the car battery puzzle featured in Half-Life 2 was also once planned to return in Episode Two, Portal, and the cancelled Return to Ravenholm? This month's Featured Article on the Combine OverWiki covers this electrical puzzle-solving element:
https://combineoverwiki.net/wiki/Car_battery

Did you know that Episode Two's Little Rocket Man achievement began as a Valve developer in-joke about carrying a baby doll through all of Half-Life 2? This month's Featured Article on the Combine OverWiki features not a goblin, not an elf, but the Garden Gnome!
https://combineoverwiki.net/wiki/Garden_Gnome

This month's Featured Article on the Combine OverWiki covers the Portal-inspired fan-made song and machinima music video, Taste the Cake:
https://combineoverwiki.net/wiki/Taste_the_Cake