The assignment Will (Matthew Morrison) gives his kids this week is to study the best love songs of all time. Yet, only two are featured in "Heart," which is pretty disappointing. Tina (Jenna Ushkowitz) and Mike Chang (Harry Shum Jr.) kick things off with "L-O-V-E," a great number, if not really being relevant to any of the episode's stories. Then it's not until Mercedes (Amber Riley) delivers a coincidentally timely (given Whitney Houston's recent passing) rendition of "I Will Always Love You" while pining over Sam (Chord Overstreet), that another example of this theme comes along. This is a truly powerful performance, and well appreciated. But that's it. Other songs, such as the guys' "Let Me Love You," are fun, but nothing deserves the "best" title other than those two numbers.
"Love Shack" is a strong ending for the episode, with Blaine returning in top form, to lead the group in a remarkably enjoyable version of the old pop hit. It surely shouldn't be on a "best love songs" list, but Glee turns it into something really fun with great choreography and tongue-in-cheek jokes. The best moment may be Finn's face as he cheesily pops up into frame near the end. The performance is an appropriate ending, even if it's mainly fluff.
Which is kind of what "Heart" is: fluff. The plots glosses over anything serious or real. The episode is amusing and entertaining. It's not bad, but there is so much missed opportunity here for it to be better.
With the impending end of many characters' runs on Glee, things will probably take a more dramatic turn soon. Maybe even next week, which is the winter finale, and features Regionals. Until then, this is a serviceable, if not overly impressive, entry.
Glee airs Tuesdays at 8 p.m. ET on FOX.