Each issue, PopSci rounds up the must-have products for the month. This March, check out a media streamer that lets you buy movies with just your remote, a Bluetooth speakerphone that charges in the sun, a super-strong vacuum and more.

Launch the gallery here. And be sure to check out our entire gear and gadget coverage.

Cell Replication

Answer your cellphone even if it’s in the other room. The No Jack base connects to your cell over Bluetooth and sends calls to the two included cordless handsets from across the house. GE No Jack $100;

Viewer’s Choice

Any media streamer lets your TV play videos stored on your computer. This is the first that also lets you download additional movies with your remote. The easy-to-use menus make it simple to buy or rent flicks from CinemaNow. MediaSmart Receiver Price not set;

Rain Coat

A sudden storm won’t ruin a fresh coat of this paint. Part of the latex polymer cures twice as fast as regular paint, quickly producing a water-resistant finish. When the paint fully dries, it forms a durable shell. Sherwin-Williams Resilience $45 per gallon;

Talking on Sunshine

Stick the first solar-powered Bluetooth speakerphone in- side your windshield, and get 30 minutes of hands-free talk time for every three hours of sunlight. Cloudy day? Charge it from your car’s lighter. Anycom Bluetooth Solar Car Kit $100;

Clean Start

A clogged vacuum filter can’t trap dust. When you turn on the AeroBlast, it automatically clears its filter with a 15-second shot of air. This forces debris into the dirt cup and cleans the filter more thoroughly than the mechanical scraping method used by other vacuums. Panasonic AeroBlast $700;

Self, Centered

Trying to take a picture of yourself usually results in a crooked, blurry mess. But with the Samsung S860, select the self-portrait mode, and the camera snaps only when its face-detection software determines that you’re centered in the frame. Samsung S860 $180;

Pocket Hotspot

Share your cellphone’s Internet connection with your laptop—or all the laptops on the bus. This battery-powered Wi-Fi router turns a phone into a wireless hotspot, which you can open to others or password-protect. CradlePoint PHS300 $180;

Decked Out

Re-create the feel of a bona fide cockpit with an LCD instrument panel that displays indicators from your flight-simulator game, such as an altimeter or a fuel gauge. Bonus: It frees up space on your monitor for more virtual sky. Saitek Flight Instrument Panel $100;

Driving Theater

Play along with Tiger. This golf simulator plugs into DVRs equipped with a USB port. Optical sensors in the turf measure the angle and speed of your shot, which is then superimposed on real tournaments you’ve recorded. Golf Launchpad Tour $200;

Wave Goodbye

Hit “snooze” on this phone’s alarm without fumbling for buttons. The camera automatically turns on to detect the wave of your hand as the phone lies on your bedside table. The same trick sends incoming calls to voicemail. Sony Ericsson Z555 Price not set;