What if you could push and pull anything near you, including other people and enemies, as if you were a supercharged gravity gun? This mod was made to celebrate the 20th anniversary of Half-Life 2.
To try out the script yourself, first download this file.
Then, find the folder with the Half-Life 2 game files. You can do this by selecting Half-Life 2 in Steam, clicking on the settings icon, then Local Files and Browse.
Now put the file you just downloaded inside the hl2/cfg folder.
Enable the developer console and type exec pushy, then hit enter. You should now be able to use your attack buttons (left/right click) to push and pull things. Keep in mind that you will have to re-run the command after every level transition, so you might want to set up a keybind for convenience.