Generic positive adjective. Synonymous with "cool" or "rad." It is generally accepted that the word was invented by Seattle-area Jungle DJ "Notorious Abe," while he was playing Tony Hawk. Common usage of the slang is limited primarily to the South Puget Sound Area, where Abe's cru and friends picked up on the word and brought it into common use.
"This video game is the bommalusch."
"No you got it all wrong, I am the supreme bommalusch."
"That's a bommalusch shirt you've got on, Olivia."
"Matrix Reloaded is the most Bommalusch movie EVER!"