On Tuesday night Keith Urban was asked to be the newest member of the Grand Ole Opry. Vince Gill popped the question during his annual benefit show for the Country Music Hall of Fame and Museum -- could there be a more fitting place to reward an artist for his or her commitment to country music?

The list of superstars who've never been asked to join the Opry is almost as interesting as the list that can claim membership. Alabama, George Strait, Merle Haggard and Glen Campbell are just some of the legends that for whatever reason were never invited. It's not clear how nominations are decided -- a statement at the Opry website says it's about "relationships between performers and fans. The relationships Opry members have with each other, relationships that may last for decades. And, perhaps most importantly, the relationship between each artist and the ideal of the Grand Ole Opry."

So which of these active artists would you like to see inducted next? We've included a few legends, and a few current country stars. Feel free to write in any name in the comments section below.