It could just be me, but I find this thesaurus entry particularly enjoyable.
A1, bang-up, banner, boss [slang], capital, classic, crackerjack, dandy, divine, fabulous, fine, first-class, first-rate, grand, great, groovy, heavenly, jim-dandy, keen, marvelous, mean, neat, nifty, noble, par excellence, prime, sensational, splendid, stellar, sterling, superb, superior, superlative, supernal, swell, terrific, tip-top, top, top-notch, unsurpassed, wonderful
acceptable, adequate, all right, decent, good, OK, passable, satisfactory, tolerable; better, exceptional, fancy, high-grade, premium, special
out of sight
bad, inferior, low-grade, substandard, unsatisfactory; mediocre, second-class, second-rate; atrocious, execrable, vile, wretched