I used to hate matches always starting in headlocks, but the more footage I watch, the more sense it makes. And yeah, there are all sorts of things one can do with a side headlock to make it fun and interesting. Check out Jumbo/Kawada from 10/24/91 in AJPW for an even better example of this. Also, I'll be talking about Benoit/Guerrero from NJ 06/11/96 soon, which sees Benoit use the sleeper in the most fun way I've ever seen a sleeper used. It's awesome. It's easy to tell the difference between a chinlock being used as a resthold and a chinlock being used to further the match, or at least it is for me. In Benoit/Scorpio from SuperBrawl III, for example, the entire match is built around it, because it's the only way Benoit can control Scorp at all. When a heel uses it to build up sympathy for a face who may not be getting the best crowd reaction, it's appropriate. When it slows what was otherwise strong momentum and pacing out of whack, it's obvious it's a resthold.