I've been using it a little, but find that it has no real fun effects.
it doesn't usually give any euphoria. however many people, including myself, still fall for these chemicals because of the immense and immediate relief from anxiety and related issues.
it's possible to achieve somewhat of a euphoria, a euphoria similar to alcohol's but maybe less pleasurable and less disorienting, given the right context (just like any drug, environment and state of mind matter a great deal). it's probably better to go with benzos than alcohol if you want a sedating buzz, though both are highly dangerous down the road.
What exactly should I be feeling while on these little guys?
your muscles should get relaxed. you might feel sleepy. basically, sedated. racing thoughts should subside. if you have anxiety combined with past psychedelic use (like LSD or shrooms) your vision might clear up. if you take quite a few of them, your vision could get blurry and you could get dizzy. please type clonazepam into wikipedia.
Do you have any suggestions for potentiators?
i don't recommend potentiating from the start of using clonazepam. that said, grapefruit juice (white, from concentrate, is best, afaik) can make the peak effects stronger and the duration of the effects longer. tagamet/cimetidine, over the counter acid-reducer, does the same but is more potent. i should note that, in hindsight

, it's not wise to tweak the liver enzymes over the long term, so be careful.
my first times with benzos were when i was prescribed them during my first year at college. i couldn't believe that i could feel comfortable like that within a crowd. 5 years later, paradoxical effects (e.g. benzo caused anxiety, ironically) are messing with me though. and tapering fast is not something to take lightly...