Lovely Complex, after four episodes, is really good stuff. When I watched the first ep I was kind of put off by the art style, but it grew on me so fast that by the end of the first ep I loved the series. It's fun stuff.
The female lead is very tall, and the male lead is very short, and the story is about their romantic misadventures. (They start out hating each other, of course.) It's really entertaining. I have through episode sixteen (KissSub just released #16 as a BitTorrent file) and I'm looking forward to the rest of it.
Rocket Girls is slightly less believable: high school girl Yukari Morita, trying to find her father in the Solomon Islands, ends up being an astronaut for the Solomon Space Agency, a Japanese-run attempt to put a person into orbit. With six months' worth of budget left, the SSA seizes on Yukari as the perfect pilot for their spacecraft: she is small, light, and intelligent. Meanwhile the SSA also recruits Yukari's half-sister Matsuri, who has lived on the island all her life.
High school girls with no prior flight training becoming astronauts in a summer? It's not realistic, but the story is fun if you don't take it too seriously.