I have a comment somewhere on another thread, I'm personally not interested in it -- I'm not one of those guys who has to run linux on everything, the BB java-based OS works very well for this device and I wouldn't change it. I love that fact that most generic J2ME apps work nicely, as well as fast!
There's a time and a place for everything, use the right tool for the job.
What I would like to see though is an SDK for linux - I'm not holding my breath but I think it would be a smart move by RIM; encourage the dudes (& gals) who like to write open software but don't use Windows. $0.02 USD.