Okay, two things:
#1, that was GREAT!
#2, it can totally be read as a stand-alone single issue and doesn't spoil anything in the first arc itself, and nothing you wouldn't have seen coming anyway in #7 i.e. the nature of Colleen's relationship with Iron Maiden and the earlier Dynamo.
The interplay between the three stories is great, and the way the three artists portray three different points in TA history works well. Mike Grell is so perfect for the scenes in the 1980s and Nick Dragotta does the Silver Age 1960s-era absolutely right. I can see why St Nick says those Silver Age scenes took so long to write, and you can really feel the way he fretted over each word to get it just how he wanted it to feel. It's just right. It's so cool. I hope there's more of Dragotta and Spencer's Silver Age next issue too. Dan Panosian does a fine job depicting the modern-day, with only Colleen represented there actually as the Agents appear only in flashback this issue, and he makes both the redheads, mother and daughter, seem sexy and dangerous. I liked Fiona Staples' cover too, only I thought the TA logo should have been colored to be more offset from the similar-toned background behind it. That's the only real criticism I have of this issue. It was well-done all around by everyone involved, and St Nick's investment in the book and its characters strongly comes across when you read it. I never doubted for a second that picking T.H.U.N.D.E.R. Agents #8 would deliver a top notch single-issue for the Review Group. I thought this was one of the best issues of the run so far, too!
Like the quote on the cover says, "If you haven't jumped on yet, now's the time."
And thanks to everyone who gives the book a chance this week, you are awesome!
*Also I recommend the earlier THUNDER Agents runs as well if you can find them or the Archive Editions at a decent price.