Most jQuery plugins, big exception for Interface, are superfluous IMO.
If people took the time to really look into everything you can do with
jQuery + JavaScript's native features, they'd see how incredibly easy
it is to come up with a home grown solution that does specifically
what they need while taking up the least amount of space.
I have to respectfully disagree. I've gotten great usage out of jEditable
and tableSorter, and I haven't tried Jorn's validation plugin, but folks
seem to love it.
Even if you are dynamite at JS (which I'm not) you can save a lot of time
leveraging these plugins.
I don't use chaining a whole lot, but that's only because I prefer a more
"vertical" style of code rather than "horizontal". I think it's a great
feature to have available.
-- Josh