Very cool website...

[groovychk]

http://www.extrasolar.net/evmain.asp

Check out some of the Water Giant worlds in their star's habitable zone.

In addition to HD 188015 b (171.56 Light Years) there are other similar habitable zone water giant planets.

HD 108874 b

HD 142415 b

tau1 Gruis b

HD 169830 c

Gliese 876 c and b (very interesting system)

109 Piscium b

HD 28185 b (very interesting)

HD 23079 b

HD 142415 b

HD 222582 b

16 Cygni B b

HD 4203 b

HD 213240 b

HD 45350 b

HD 141937 b

HD 82943 b

HD 183263 b

HD 190228 b

HD 210277 b

HD 38529 c

HD 136118 b

HD 114729 b

HD 92788

HD 65216 b

mu Ara b

mu Ara d (hot super earth in same system as water giant)

HD 20367 b

HD 147513 b

HD 41004 A b (not labeled habitable zone but looks it)