Please see the most recent updates in the "Where did the .com name go?" thread. Posts number 16 and 17.
And now we have the C-130J & C-27J....
You guys are missing the C-131 in the back. They lasted quite a while as well.
As for the Herk, most older aircraft have been retired. The fleet has suffered from wing box cracks. The last of the E-models is scheduled to be retired by October. Some of the H1s are even in the boneyard, meaning (with noteable exceptions) that the mid-70's models will soon be the oldest in the USAF fleet. The H2s and H3s are expected to be upgraded under the AMP program and soldier on for another 20 years.
As for the J, who knows how long they'll be around.
USCG Current doesnt use the C27J, we only could wish. Where stuck with the HC144, a CASA 235.