Your humble #4Pac welcomes you to another installment of what will be a regular feature on the Pac-12 blog. Here's how it works: We take one question or one topic, or maybe it's some other really cool format that we haven't even thought of yet, and all contribute our thoughts.

Have a suggestion for something we should address in a future #4Pac roundtable? Go ahead and send it to our mailbag.

Today, we're asking which rivalry game each reporter is most excited to see?

David Lombardi/@LombardiESPN: Cal vs. Stanford

Here's a recipe for entertaining theater: Take two rival programs on opposite trajectories and have them collide. Stanford is diving fast coming off the pinnacle (a Rose Bowl season), while Cal is picking up steam coming from the nadir (1-11 misery). It’s fitting, then, that both teams are 5-5 at this point of intersection. Technically, they're in the same spot when it comes to record, but aside from that, their situations couldn’t be any more different.

The Cardinal brings the Pac-12’s worst offense into this game, while the Bears own the conference’s worst defense. Something has to budge in that matchup of extremes, right? This game should be significantly more competitive than last year, and the Bears should enter angry, too: Stanford put up a Big Game record 63 points in 2013 and posted the largest-ever margin of victory in the rivalry’s century-plus long history.

Cal’s on the upswing now, and Stanford is clearly vulnerable, so this features everything a legendary rivalry should: a chance at vengeance, pride, and a boatload of history. Oh, and a victory clinches a postseason berth for the winner. It’s been a while since Big Game meant so much to both programs.

Chantel Jennings/@ChantelJennings: Oregon vs. Oregon State

I'm most excited to watch the Civil War. For me, I think it'll feel a lot like my Michigan-Michigan State rivalry roots -- two great programs about 40 minutes from one another. Throughout the state of Michigan you split allegiances and I think that's true in Oregon as well. I would say the same of USC-UCLA, but there's so much else competing for people's attention in Los Angeles. Having been a part of the Michigan-MSU rivalry, I'm excited to see how this Oregon-Oregon State one stacks up. Plus, there's always the chance the Beavers pull off another upset and dash the Ducks' playoff hopes.

Kevin Gemmell/@Kevin_Gemmell: Cal vs. Stanford

I grew up watching the Big Game, so that one will always be near and dear to me. I never had a favorite team, I just enjoyed the pageantry of the rivalry and the history of loathing between the schools.

A former colleague of mine at the San Diego Union-Tribune, Mark Zeigler, was one of the key instigators in producing the fake Cal newspaper. I love the history of the Immortal 21 and the Phoenix Five.

This year’s offers an extra dose of drama because the teams meet right in the middle of differing trajectories. The Bears, building off their winless-against-FBS-teams season, boast the No. 2 offense in the conference. But they can’t stop anybody. The Cardinal have the worst offense in the league. But their defense is fantastic.

Though Sonny Dykes won’t be named the Pac-12 coach of the year (I don’t think), he deserves some recognition for what he’s been able to do in turning the program around so quickly.

I was asked in a recent radio interview if the Cardinal might come out flat because they’ve had such a down season. The answer is, obviously, no. This is not a game teams come out flat for. Both teams are fighting for postseason berths and given the different styles they play, the stage could be set for one of the more dramatic Big Games in recent history.

Kyle Bonagura/@BonaguraESPN: USC vs. UCLA

Each rivalry has its own unique aspects that make it appealing, but this year the answer is clear: USC at UCLA. With the Bruins needing two more wins to clinch the Pac-12 South and USC also in contention, there won’t be a Pac-12 rivalry game with higher stakes this year. And after UCLA came in at No. 9 in the College Football Playoff rankings on Tuesday, there’s still a plausible route for the Bruins to be one of the four teams left standing. That ends the discussion.

There’s always going to be something about the UCLA-USC game that other rivalries don’t have as a result of the schools’ locations. The campuses are about 13 miles apart and both fall within the Los Angeles city limits, making it without question the best crosstown rivalry in the country. That doesn’t necessarily make it better than, say, the Apple Cup -- Washington and Washington State are nearly 300 miles apart -- but it does give it an added dynamic that other games don’t have.

As for the actual game, the quarterbacks -- UCLA’s Brett Hundley and USC’s Cody Kessler -- would have made it interesting regardless of the stakes.