If you're feeling good about the market, you're not alone. Take my hand as we go over some of this week's more uplifting headlines.

1. Game on, Blockbuster
DVD-rental giant Blockbuster (NYSE:BBI) is coming through on its February promise to begin mailing out video-game rentals. The pilot program kicks off in the Cleveland area by the end of June, with plans to go national by year's end.

Beating Netflix (NASDAQ:NFLX) to the punch is huge. Beyond Gamefly and a few other fringe offerings for diehard gamers, this is a mostly untapped market. Netflix has so far avoided using its mailers for any media other than flick discs. The knocks on going the video-game route are that the games are expensive, some titles are devalued quickly (Madden 08, anyone?), and the young gaming audience is bound to cause plenty of scratched discs.

However, it will broaden the value proposition of Blockbuster's fledgling mail rentals. The company will be able to position itself as a more complete home-entertainment service, and it will have greater flexibility to raise subscription prices, too.

This is what Blockbuster needs -- and what Netflix dreads.

2. So Zune me
I've been laughing at Microsoft's (NASDAQ:MSFT) Zune since the first-generation brown models began rolling off the assembly lines. Maybe it's time to stop.

Microsoft is finally giving its Zune -- a distant third in the portable media player space -- the makeover it needs. The new Zune HD will look a lot like the iPod touch, but it's beefing up the specs with an OLED touch screen, the ability to play high-def on TV screens, and a built-in receiver for HD Radio.

For the first time since my brown-Zune-inspired giggling fit, I actually want a Zune.  

3. No more Sirius shortcomings
Sirius XM Radio (NASDAQ:SIRI) had its annual shareholder meeting on Wednesday. The satellite-radio giant delivered a compelling review of how last summer's merger between Sirius and XM has delivered significant cost savings, despite slowing revenue and subscriber growth.

The real gem in the report is that the company's "Best Of" package is a surprising success. When Sirius XM posted a year-over-year decline in average revenue per user this past quarter, I figured that it wasn't getting a lot of traction on its premium offering, with which subscribers pay $4 more to hear a few choice channels from the other service. Well, it's apparently catching on. There are apparently 748,000 subscribers who have signed up for the "Best Of" package.

4. Right on Target
Target (NYSE:TGT) survived a proxy battle mounted by activist hedge fund manager William Ackman.

That's good. Ackman's ideas weren't out of whack, nor was his proposed slate of directors weak. In fact, his candidates had ideal skill sets and impressive pedigrees.

However, the old "if it ain't broke, don't fix it" adage is appropriate here. Target is holding up relatively well. Shareholders aren't ready to take a battering ram to the company in protest. Sure, the company hasn't been as recession-resistant as Wal-Mart (NYSE:WMT), but Target is smart enough to play the "cheap chic" game. Its strengths lie more in specialty apparel than in the cutthroat world of groceries and consumables, where Wal-Mart's size trumps all.

In the words of Chris Crocker, "Leave [Target] alone!"

5. Krispy Kreme comes full circle
If you want to appease your inner Homer Simpson, remember to stop by a Krispy Kreme (NYSE:KKD) near you a week from today. The company is celebrating National Doughnut Day on June 5. Anyone who walks into a participating Krispy Kreme store will receive a free doughnut.

You have to love this promotion. Who eats just one doughnut? Who could resist pairing their free doughnut with a cup of hot coffee or one those nice, cool Krispy Kreme Chillers? When Ben & Jerry's or Baskin-Robbins have their annual free cone days, you see lots of people walk in and out with just the free ice cream. A complimentary doughnut is the better bait for add-on sales.

Stay positive!

Netflix is a Motley Fool Stock Advisor pick. Microsoft and Wal-Mart Stores are Motley Fool Inside Value recommendations. Try any of our Foolish newsletter services free for 30 days.

Longtime Fool contributor Rick Munarriz is an optimist at every turn. He's the inspiration for The Killers' song "Mr. Brightside." Howns shares of Netflix and is part of the Rule Breakers newsletter research team, seeking out tomorrow's ultimate growth stocks a day early. The Fool has a disclosure policy.