We've driven down to Childress, TX, from Amarillo, today. We saw a few messy storms on the way - they briefly looked quite nice but due to the non-existant wind shear, they all fell apart quite quickly.
The next couple of days bring slightly better wind shear but it's still marginal.
Anyway, this is some brief HD video of lightning the other day (22nd May). Click through to YouTube and watch it in HD by clicking the HD button - might take a while to load on a slow connection though.