These always stump me, and the ones I think of, everyone seems to figure out right away.
Anyway, I think I've come up with a good one. It's not in google, so a search probably won't help much.

LRHECOOON ... What comes next? Need some more okay, this continues the pattern:
UIIIOS ...

I can give a hint in a few days if no one gets it. If you do figure it out, please continue the pattern.

-d

Okay, here's a hint,

The first letter (in case your font makes it show up ambiguous is "L" as in "Lima")
Another hint below in white

There are 26 letters in the pattern

-d

Can you help me out with another hint please?

I have one:

AABCEHMVHCK........

Fibonacci in letters

Which letters come next?

actually, your V should be a U

Could we please return to darryl's pattern?

The L as in Lima was actually a clue to some extent.

-d

First letters of capital cities, in order of ...population? ...latitude (or longitude) around the globe? ...something else?

Nope, way off. Unless it coincidentally happens to be correct, but not what I was going for.

-d

I can find a pattern in the first four letters, L as in Lima is the capital of Peru, if you add a line to P you get R. H as in Helsinki is the capital of Finland, if you add a line to F you get E.
That's it, it's all I have.

Nope, it has nothing to do with cities or capitals or countries anything like that. I'll add another clue if no one gets it after this weekend.

-d

OMG! It's so hard. There are 26 vertebrae. There are 26 Olympic sports. There are 26 amendments in the US constitution. NONE OF THOSE WORK!!!

There are twenty six letters in the English alphabet too. The three "I" are I as in India

-d

Sure I knew there were 26 letters but since O and I got repeated I just left that out.

Oh, and the "R" is an R as in "Romeo"

-d

Too much of a clue. The sequence continues

AUOIAN...

... and I'll leave the rest so everyone else can have a shot as well. Good one!

Got it (OSA NA)!

With only 5 left in the sequence I'll make it 4.. Next would be I

Other than the fact that these "clues" relate some of the letters to their equivalent in the NATO Phonetic Alphabet, I don't understand them at all

Tricky puzzle!

Isn't it IHRAU? I can't see where OSANA fits into the sequence.

EDIT: Here's one: BIVCCCSWBCM...

OSA NA = "got it" (or rather vice versa)

Mee too (IC ASS)

Those clues did turn out to be helpful after all

For those who haven't figured it out yet and would like to know the answer, highlight below, copy and paste it into notepad or something that won't copy the formatting:

I wanted to do a puzzle involving the phonetic alphabet (Alfa, bravo, charlie, delta, etc. http://www.osric.com/chris/phonetic.html for more info). I couldn't use the first letter of each one since it would just be the regular alphabet, so I took the second letter in each of the words

Hope you enjoyed it.

-d

This isn't really 'what comes next', but guess what the letter is supposed to be here:

AAA?AAAA

IT'S NOT A!

Well I have an answer, but only if you're off by one... my answer (also not A) is for

AAAA?AAA

So, once you get Jorbs', you, can try mine!

Oops. I did mess up. But this also works following the same rule:
AAAA?AAAAAA
The answer is still not A.